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Operating Arch Exterior Full ViewOperating Arch Exterior Full View 2Operating Arch Double Unit ExteriorOperating Arch Exterior Detail 1Operating Arch Exterior Detail 2Operating Arch Exterior Detail 3Operating Arch Interior Full View 1Operating Arch Interior Full View 2Operating Arch Interior Detail 4Operating Arch Interior Detail 1Operating Arch Interior Detail 2Operating Arch Interior Detail 3Operating Arch LatchOperating Arch Latching PointOperating Arch Hinge

SunClad Casement
Operating Arch Top Window

Product Highlights

• SunClad Extruded Aluminum Exterior
• High Durability Powder Coat Exterior Finish
• Fail-Safe Water Management System
• Integral Nail Fin
• Ponderosa Pine Interior
• Crank Out Sash Operation
• Single Lever, Multi-point-Latching System
• Adjustable Hinges
• Energy Efficient Performance
• Air & Weather Tight Sash Seal
• Insulated Glass with Duralite™ Spacer
• High Performance Low-E Glass with Argon


The SunClad USA Casement Operating Arch Top window is part of the casement family of products. As the name implies, this window is based on the casement, using the the same frame and sash design with the addition of a radius or arched top. The sash is hinged on the side using door style hinges, cranks open with hand operator and latches shut with our single lever multipoint latching system. The sash can be ordered left or right hinged, as viewed from the exterior.

Our SunClad exterior uses heavy-gauge extruded aluminum for strength, durability and resistance to weather and abuse. It is coated with a highly durable, baked on Powder Coat finish that meets AAMA 2604 standards. The coating is available in 11 Standard colors, 26 Feature finishes and several Metallic and Anodic finishes. Custom color matching is also available. All SunClad products are designed with a fail-safe Water Management System. The exterior perimeter of the glass is sealed against water intrusion. However, if that seal should ever fail, our Water Management system provides an effective drain path (to the exterior) for water to exit the glazing channel and sash structure. This helps protect the insulated glass against seal failure and the wood interior of the window against deterioration. The exterior frame includes Sun's integral nail fin for stable installation and our accessory groove that allows for the application of various exterior trim options, including clad brick mold, wide trim profiles and more.

The window interior features clear ponderosa pine that is suitable for a natural (clear) finish, staining or painting. The sash profile is kept narrow to maximize the daylight opening. A single crank operator, with fold-away style handle, is located on the sill to open and close the sash. A latch lever is located on the side jamb to unlock (and lock) the sash. Hinges are stainless steel door style hinges.

Grille systems are available in a range of styles, sizes and patterns for visually dividing the glass area and providing a decorative design accent. This includes Sun's Simulated Divided Lite (SDL), Interior Wood Grille and GBGs (grilles between the glass). Interior mounted screens featuring BetterVue™ screen mesh are available for the operating windows, along with a roll-away retractable style screen. Blinds between the glass are available for dust-free view and light control.

As with all SunClad products, the USA Casement family is designed and built to provide superior energy saving performance. Full perimeter weather-stripping and secure sash closure provide an air-tight seal. Select one of our climate-targeted, Low-E insulated glass configurations to take advantage of Sun's best energy performance combination for your region. All Sun IG units use the Duralite™ warm-edge spacer system, a non-metallic spacer that provides the lowest thermal conductivity and best gas retention of any IG spacer system.

SunClad USA windows are covered by our extensive warranty and are hand crafted to provide you with high quality, dependable windows that will serve you and your home for many years.

Casement Operating Arch Operation

SunClad™ Casement Operating Arch Top Window Operation

SunClad™ Casement Operating Arch windows have a sash with a radius arch top that fills the whole frame opening of the window. The sash opens to the exterior of the building by means of hand crank operator that is located on the window sill. The sash is hinged with stainless steel traditional door style hinges. The hinges can be located on either the left or right side, as viewed from the exterior (specify when ordering). The sash latches closed with multiple latching points (depending on the size of the window) that are activated by a single lever located on the side jamb that is opposite the hinges.

Awning Operation
Sun Clad Extruded Aluminum Exterior

SunClad™ Extruded Aluminum Exterior

SunClad™ is the name we give our heavy-gauge extruded aluminum exterior on our clad-wood products. Aluminum is highly resistant to the effects of weather. It does not rust like other metal. It does not rot or decay, warp or distort like wood. It does not break down chemically over time like vinyl or fiberglass. Our heavy gauge extruded aluminum will not easily dent like Roll Form aluminum wrapped over a wood sash exterior. It provides exceptional strength and long life for the product and it is the perfect surface for our High Durability Powder Coat Finish.

• Superior Strength - for the frame and sash
• More Durable - protects interior wood components
• Protects the Home better
• Fail-Safe Water Management System - weeps water from frame and sash components
• Integral Nailing Fin - permanent fin is part of the frame
• High-Durability Powder Coat Factory Finish

Sun Clad Exterior
Nailing Fin
Integral Nail Fin

Integral Nail Fin

SunClad™ products are designed with a rigid nail fin that is formed as an integral part of the exterior frame extrusion. This provides for a very strong and stable installation. The nail fin can be scored and removed for mulling and retro-fit applications.

Nailing Fin
Fail-Safe Water Management System
Water Management System

Fail-Safe Water Management System

All SunClad products are designed with a Fail-Safe Water Management System. The exterior perimeter of the glass is sealed against water intrusion. However, because aluminum, glass and wood all expand and contract at different rates, we design our Fail-Safe Water Management System to provide an effective drain path (to the exterior) for water to exit the glazing channel and sash structure. This prevents water or moisture from becoming trapped within the sash, which helps protect the insulated glass against seal failure and the wood interior of the window against deterioration.

Water Management System
Powder Coat Finish
Powder Coat

High Durability Powder Coat Finish

Sun uses high durability powder coating as the exterior finish of our SunClad products. It is tougher than conventional painted finishes. The powder is electrostatically applied to aluminum extrusions that have been washed and prepared in a multi-stage pre-treatment process. The applied powder is baked on to the extrusion which is ready for production shortly after leaving the oven. Our standard finish meets AAMA 2604 requirements and allows us to provide a 20 year warranty against peeling, flaking, blistering, cracking, checking and loss of adhesion and a 10 year warranty against chalking and color change. An optional AAMA 2605 finish is also available and offers a 30/15 year warranty respectively. Sun offers 11 Standard Colors, 26 Feature Colors, 15 Metallic Finishes and 6 Anodic Finishes. Additionally, virtually any color you want is available through Custom Color Matching. Sun's Powder Coating is also very environmentally friendly, with no VOCs and no lead or chromium in any of the processes.

Powder Coat
Wood Interior
Wood Interior

Beautiful Wood Interior

SunClad products feature a beautiful, high-grade, clear Ponderosa pine interior that is suitable for staining or painting. All wood components are treated with a wood preservative for long life.

• Select Clear Ponderosa Pine - beautiful, high-grade
• Suitable for staining or painting
• Preservative Treated against insects and decay

Ponderosa Pine
Insulated Glass
Insulated Glass

Sun's Insulated Glass

All Sun products are glazed with Dual Glazed insulated glass. All of Sun's Hi-Performance Low-E Insulated Glass units are Argon filled and feature the Duralite™ warm-edge glass spacer system. Both dual glazed (using two pieces of glass) and triple glazed (using three pieces of glass) are available (depending on the product type). Tempered insulated glass units (both glass pieces) are standard on all door units. Sun manufactures these units in our own state-of-the-art insulated glass production facility, allowing us to produce the high quality insulated glass units for each order. This line is carefully monitored for quality control, glass testing and certification, to assure you that all Sun insulated glass is produced to the highest standards.

Insulated Glass
Duralite™ Warm-Edge Spacer

Duralite™ Warm-Edge Spacer System

All Sun insulated glass units use the Duralite™ warm-edge glass spacer system. Duralite is the only all non-metallic spacer system available. This gives superior thermal performance and its flexible properties provide a superior seal and excellent argon retention. It is one of the reasons we are able to provide a full 20 year warranty on our insulated glass.

Duralite Spacer
Low-E Glass
Low-E Glass

Climate Matched Low-E Glass

Sun Windows offers Energy Saving Low-E glass that is matched to your climate. Select our Sun Advantage 270 Low-E glass if you are in a climate that has a mixture of both heating and cooling seasons. Sun Advantage 270 is a second generation Low-E glass that permits 70% of the sun's visible light while blocking 86% of harmful UV rays. Select Sun Advantage 366 Low-E glass if you are in a climate that has stronger cooling requirements. Sun Advantage 270 is a third generation Low-E glass that reduces the amount of the sun's visible light to 66% while blocking 95% of harmful UV rays. Both types use our Duralite™ Warm-Edge glass spacer and have air spaces that are Argon filled for an insulated glass unit that offers excellent thermal performance.

Low-E Glass
Reglazable Sash / Panel
Reglazable Sash & Panels

Reglazable Sash & Panels

All SunClad™ Wood products use interior wood glazing stops that allow for the reglazing of the sash or panel should the glass ever be damaged.

Air-Tight Construction
Air-Tight Construction

Air-Tight Construction

A combination of our product designs, the materials we use and our manufacturing processes produce windows with outstanding air-infiltration performance. Complete weather-stripping and secure sash closure provide an air-tight seal. Our product air-infiltration ratings out-pace the industry standards and many of our competitors.

Lead Times For Options
Option Lead Times

Lead Times For Options

Since all Sun products are built to order, we offer a wide range of options for you to customize your windows and doors to meet your needs. Some of these options are part of the standard production flow while others are more specialized and may require additional time to produce. When a quote is created for your order, any extended lead times are indicated. This can assist you in planning your project and help you coordinate your workflow.

Exterior Colors
Clad Exterior Color Options

SunClad™ Exterior Colors

Sun's High Durability Powder Coat Finish is available in a wide range of Standard Colors, Feature Colors, and Metallic Finishes as well as in Custom Match Colors. You also have the option of using various color combinations to create a unique visual accent. Color cards available upon request.

Custom Match Colors
Virtually, any color you want is available through our color matching feature. Give us a color sample to match or even an RAL* number and we will produce your windows in your own custom color. Additional fee applies.

Multi-Color Combinations
In addition to having your choice of almost any exterior you can think of, you can now choose to create custom, multi-colored combinations. As an example you may select to have the product sash in one color, the grilles in another and the frame (and or) brick mold trim in yet another color. By combining different colors with different options you can create unique exterior accents to give your home that extra-special touch.

Note: Due to the variations in color representation on computer monitors, the colors shown are for general reference only. For accurate color selection and matching, please obtain a color chart or sample swatch from your Sun Window Dealer or Representative.

Sun Clad Exterior Colors
Exterior Trim & Accessories
Exterior Trim & Accessory Options

SunClad™ Exterior Trim & Accessories

An exterior trim system is available on SunClad™ products to enhance the visual appeal of the window and increase the accent they add to the home's exterior. This system includes various SunClad™ aluminum extrusion profiles and exterior mulls. The profiles include a Traditional Brick Mold, Georgian Brick Mold, 3-1/2" Flat Casing, various mulls and expansion mulls, as well as 30° and 45° angle mulls. Select this link to view the profiles . . . SunClad™ Trim & Accessories - Profile Drawings.

All of the extrusions are powder coated to coordinate with the SunClad windows and doors to which they are applied. They can be the same color or in any accent color you select.

Exterior Trim & Accessories
Interior Wood Finishes & Options
Wood Finishes & Options

Interior Wood Finishes & Options

The wood interior of all SunClad™ products is available in the following finish options.

• No Finish
• Clear Poly Finish
• White Painted Finish (see paint code for matching)
• Custom Painted or Stained (customer to supply finish number or sample to match)

All SunClad™ products feature Clear Ponderosa Pine. Optional wood species are available by custom quote. Contact your Sun Representative or Sun Customer Service.

Sun Interior White Paint Code:

Sherwin Williams 0Z3264128
Product B-20W51
Formula: B1(cce 128), 1; Y3 (cce 32), 2; (cce 64), 1; (cce 128), 1

Interior Wood Finishes & Options
Hardware - Operator Options
Hardware - Casement Operating Arch

Casement Operating Arch Hardware Options

SunClad™ USA Casement Operating Arch hardware consists of a hand-crank operator with a fold-out handle that is mounted on the sill of the window, a side mounted sash latching lever and door style hinges. The sash opens toward the outside up to 90° for maximum ventilation.

The operator housing cover and handle and the latching lever handle cover are available in three standard and three optional finishes. The optional finishes require additional time and an upcharge. The hinges are stainless steel.

Standard = White, Tan, Faux Oil-Rubbed Bronze
Optional = Antique Brass, Brushed Chrome, Brushed Nickel

Operating Direction
Casement Operating Arch window sashes open toward the outside. Their direction of opening (or their hinge side) can be ordered as left or right, as viewed from outside.

Hardware Finishes
Hardware - Casement Operating Arch

Casement Operating Arch - Hinge Finishes

SunClad™ USA Casement Operating Arch uses hinges that are exposed to the exterior. These hinges are stainless steel to resist rust and other damage caused from exposure to the elements. They are available in two finishes: Stainless Steel and Chestnut Bronze.


Operating Arch Hinges
Glazing Method / Type
Glazing Method

Glazing Method

All Sun products are glazed with Dual Glazed insulated glass. Our Casement family products as well as our Fixed Lite products are also available with Triple Glazed insulated glass.

Glazing Options
Glass Types
Glass Types

Low-E Insulated Glass

Most building codes now require thermally efficient insulated glass in windows and doors. Therefore, high-performance Low-E glass has become an industry standard. Sun offers a range of Low-E Insulated Glass units to match maximum thermal benefits with your region.

• Sun Advantage 270 is for regions that have both heating and cooling seasons.
• Sun Advantage 366 is for regions that require mostly cooling.
• Sun Advantage 270 plus adds a 4th surface i89 Low-E to lower the U-value and improve thermal performance.
• Sun Advantage 366 plus adds a 4th surface i89 Low-E to lower the U-value and improve thermal performance.
• Clear glass is available for specific applications where energy performance codes do not apply or thermal performance is not a concern.


Low-E 63/31 Low-E 55/27
Glass Tints
Glass Tints

Glass Tints

All insulated glass units can be tinted. Tints available are: Bronze and Gray. Tints are part of the glass, not a film. Never apply glass films to Sun insulated glass units.

Tinted Glass
Obscure Glass
Obscure Glass

Obscure Glass

All insulated glass units can include Obscure glass. Available Obscure textures are: Typical Obscure (P516) and Niagara Obscure (vertical waterfall pattern).

Obscure Glass
Tempered Glass
Tempered Glass

Tempered Glass

Most insulated glass units can be Tempered to meet glass requirements. Both pieces of the insulated glass unit are tempered. Most glass options (Low-E, Tints, Obscure) are available in tempered glass units.

Tempered Glass
Decorative Glass
Decorative Glass

Decorative Glass

Sun offers decorative glass. Various custom patterns are available. Contact the factory for more information.

• Fleur De Helios Pattern (shown) - stocked for 48" x 48" Fixed Lite
• Additional Pattern and Type available by custom quote

Decorative Glass
Grille Types
Grille Types

Grille Types

SDL or Simulated Divided Lite, is an aluminum grille bar permanently applied to the exterior glass surface and a wood grille permanently applied to the interior glass surface. A black shadow bar is sealed between the glass. This simulates old divided lite windows without sacrificing the benefits of a single insulated glass unit. Available in 5/8", 1" , 1-1/4" and 2-1/4" (simulated mull) wide profiles. Also available in a Raised (Putty Glazed) bar profile in 5/8" and 1-1/4".

Simulated Check Rail is a variation of our SDL using a wide 2-1/4" bar horizontally across a Casement or Fixed Lite window to simulate the look of a Double Hung window.

Simulated Mull is another variation of our SDL using a wide 2-1/4" bar vertically. One or two of these can be placed in the center of a wide Casement or Fixed Lite to simulate the look of two windows joined together or two sashes side by side.

Wood Grille (Push-Pin style)
This removable wood grille mounts to the window interior. Grille clips with push-pin points slide in notches at the end of each grille bar to fasten the grille to the window. Removing the grille makes it easier to clean the glass. Wood grilles are available in 1" and 1-1/4" wide profiles.

Wood Grille (Surround style)
Also available is a wood surround grille that has wood frame around the perimeter of the grille. This inserts into the daylight opening of the sash and is held in place by an anchor pin.

GBG (Grilles Between Glass) are 3/4" contoured profiled aluminum grilles sealed within the insulated glass unit for no-maintenance convenience. Available in White, Vanilla, Beige, Sand, Bronze, Black, Green and Red colors. They are also available in two color combinations (one color facing the interior the other facing the exterior) of White/Sand and White/Bronze.



Wood Grille

Wood Grille

Grille Colors
Grille Color Options

Grille Colors

SDL Colors
All SDL options and variations are available using any of our SunClad™ Exterior Color options for the exterior grille bar. The interior wood grille can be finished using any of our interior finish options. The shadow bar is black.

Wood Grille Finish Options
Wood Grilles are available with any of our Interior Wood Finish Options: No Finish, Clear Poly, White Painted, or Custom Painted or Stained.

GBG Colors
Available in White, Vanilla, Beige, Sand, Bronze, Black, Green and Red colors. They are also available in two color combinations (one color facing the interior the other facing the exterior) of White/Sand and White/Bronze.

Sun Clad Exterior Colors
Grille Patterns
Grille Patterns

Grille Patterns

Sun's Grille systems (see grille types) are available in a various standard Grille Patterns or in custom designed patterns. View our Grille Pattern charts to see illustrations of our standard patterns. If you have a custom pattern, please submit a drawing to us and we will provide you a quote for your project. Please note that not all patterns are available in all grille types and sizes. Manufacturing limitations apply.

Grille Patterns

Click image to view full Grille Patterns Chart
Screen Options

Screen Options

Screens are available for operating windows. Screens have aluminum frames strung with fiberglass screen mesh. The screen frame mounts into a screen track in the product frame. Sun now offers BetterVue™ Insect Screen as the standard mesh on all SunClad™ window screens. The BetterVue™ mesh is woven from finer strands which helps it provide 10% better insect protection, 10% better airflow and 10% clearer view than traditional insect screen. Also available is the top of the line UltraVue™ Insect Screen mesh provides 20% better insect protection, 15% better airflow and 15% clearer view.

Roll-Form Screen Frame
Sun's Standard Screen Frame is Roll-Form Aluminum in limited colors: White, Sand and Dark Bronze.

Extruded Screen Frame
Sun also offers a heavy-duty, Extruded Aluminum frame that accepts any of Sun's Powder Coat finishes.

Packaging and Shipping Options
On Product - Screens can be packaged installed on the window (standard method).
Packaged Separately - Screens can be packaged separately from the window for an additional fee.

Jamb Depth & Extensions
Jamb Depth & Extension Options - Casement

Jamb Depth & Extension Options

All SunClad™ products have a standard jamb depth of 4-9/16" (unless noted otherwise). For deeper wall construction, single piece extensions can be added to the jamb up to a total jamb depth of 6-9/16". These extensions are applied at the factory.

Note: Jamb Extensions are available in 1/8" increments up to 7-9/16" total jamb depth. Extensions over 6-9/16" are achieved by stacking a 2" piece plus an additional piece up to 7-9/16" total jamb depth. See our Jamb Extensions page for more details.


Additional Casement Jamb Options

Step Jamb - For trim alignment with other non-casement family products. Adjusts the trim offset on casement family products to line up with other SunClad™ products.

No Jamb - Casement family products can be built without the interior wood jamb for retro-fit applications where the product is used as an insert window.

Mulls & Mulling
Mulls & Mulling Options

Mulls & Mulling

Product Combinations
SunClad™ products can be combined with companion products to form special feature windows or window and door combinations. SunClad™ products are designed so that they can be easily grouped together to form multi-unit configurations. These configurations can be as simple as combining two units together, side by side, to form a 2-wide unit, or as complex as combining multiple units of various styles and shapes to form a special feature window wall. Send us your ideas and we will help you configure your special combination.

Mulled Unit Dimensions
When mulling SunClad products together, the over-all unit size can be determined by adding the product unit sizes together. For combinations of 3 units or more, an incidental gain may occur. Increase the Rough Opening dimension by 1/8" for 3 units or 3/16" for four units.

Mulled Unit Restrictions
The maximum over-all size for a factory mulled unit cannot exceed 12' by 8' (vertical or horizontal).
Maximum units wide = 5
Maximum units high = 4
Maximum Door Mulled Unit = 6-0 x 6-8 with Call Height 12 Transom
No units can be mulled to the sides of True French Doors. Use separate framing.

Exterior Mull Covers
Exterior Mull Covers for mulling windows on the job site. Include exterior mull cover only. (Installation is not provided).

1 wide
Sun Clad Operating Arch Top Window Sizes

SunClad Operating Arch Top Window Sizes

Windows are available in a wide range of standard sizes listed in this chart. However, if you do not find the size you are looking for, Sun can make your windows in custom widths or custom heights to meet your needs.

Note: unit sizes have a tolerance of +/- .0625 per frame (unit) dimensions.


Unit Width





RO Width

24 1/2"

28 1/2"

30 1/2"

32 1/2"






Cord Height 4-9/16" 4-1/2" 5-1/4" 6-1/8"
Shoulder Height = 24" 2020      
Unit Height 28 9/16"      
RO Height 29 1/16"      
Shoulder Height = 40" 2036 2436 2636  
Unit Height 44 9/16" 44 1/2" 45 1/4"  
RO Height 45 1/16" 45" 45 3/4"  
Shoulder Height = 48" 2044 2444 2644 2844
Unit Height 52 9/16" 52 1/2" 53 1/4" 54 1/8"
RO Height 53 1/16" 53" 53 3/4" 54 5/8"
Shoulder Height = 52" 2048 2448 2648 2848
Unit Height 56 9/16" 56 1/2" 57 1/4" 58 1/8"
RO Height 57 1/16" 57" 57 3/4" 58 5/8"
Shoulder Height = 59" 2055 2455 2655 2855
Unit Height 63 9/16" 63 1/2" 64 1/4" 65 1/8"
RO Height 64 1/16" 64" 64 3/4" 65 5/8"
Shoulder Height = 64" 2060 2460    
Unit Height 68 9/16" 68 1/2"    
RO Height 69 1/16" 69"    
2 wide
Sun Clad Operating Arch Top Window Sizes - 2 wide

SunClad Operating Arch Top Window Sizes - 2 wide

Windows are available in a wide range of standard sizes listed in this chart. However, if you do not find the size you are looking for, Sun can make your windows in custom widths or custom heights to meet your needs.

Note: unit sizes have a tolerance of +/- .0625 per frame (unit) dimensions.


Unit Width





RO Width

40 1/2"

48 1/2"

56 1/2"

64 1/2"






Cord Height 6-1/16" 7-9/16" 7-13/16" 9-1/4"
Shoulder Height = 24" 3620      
Unit Height 30 1/16"      
RO Height 30 9/16"      
Shoulder Height = 40" 3636 4436 5236 6036
Unit Height 46 1/16" 47 9/16" 47 13/16" 49 1/4"
RO Height 46 9/16" 48 1/16" 48 5/16" 49 3/4"
Shoulder Height = 48" 3644 4444 5244 6044
Unit Height 54 1/16" 55 9/16" 55 13/16" 57 1/4"
RO Height 54 9/16" 56 1/16" 56 5/16" 57 3/4"
Shoulder Height = 52" 3648 4448 5248 6048
Unit Height 58 1/16" 59 9/16" 59 13/16" 61 1/4"
RO Height 58 9/16" 60 1/16" 60 5/16" 61 3/4"
Shoulder Height = 59" 3655 4455 5255 6055
Unit Height 65 1/16" 66 9/16" 66 13/16" 68 1/4"
RO Height 65 9/16" 67 1/16" 67 5/16" 68 3/4"

Sun Windows and Doors