Aluminum Casement Windows

Commercial aluminum casement windows are side-hinged operable windows that open inward or outward for ventilation and access. Boyd Aluminum manufactures project-in and project-out casement window systems for commercial new construction, renovation, historic-replica, thermal, and coastal applications, with selected blast- or impact-related configurations where supported by current product documentation.

Use this page to compare operation type, product-series fit, frame depth, glazing capacity, thermal and historic options, zero sightline vents, and available performance documentation. Final selection should be matched to the exact series, opening condition, glazing, hardware, installation method, current product documentation, and project specifications.

Commercial Aluminum Casement Window Options

The table compares project-out and project-in aluminum casement windows, thermal-strut and historic-replica options, coastal casement/projection windows, selected blast- and impact-related configurations, and SV100 zero sightline vents. Boyd product documentation may use casement projection window terminology for certain configurations; drawings and schedules may also describe the operation as in-swing or out-swing.

Published dimensions and ratings apply only to the listed series and configurations. Blast, impact, glazing, opening-size, installation, and approval requirements are configuration-specific. Confirm current Boyd product documentation and project requirements before bidding, specifying, or preparing submittals.

How to Choose Commercial Aluminum Casement Windows

Select a casement window by operation direction, opening and clearance conditions, architectural appearance, thermal requirements, glazing, performance documentation, historic-review needs, and surrounding wall or framing conditions. Project-in and project-out configurations may also be identified as casement projection windows in drawings, schedules, or product references.

• Use project-out configurations when the opening and project requirements call for outward-operating aluminum casement windows. If drawings use out-swing language, Boyd Aluminum can help match that terminology to the selected project-out casement documentation.

• Use project-in configurations when the opening and project requirements call for inward-operating aluminum casement windows or interior-side access considerations. If drawings use in-swing language, Boyd Aluminum can help match that terminology to the selected project-in casement documentation.

• Use 3250XTC or 3250XTC-G options when thermal-strut performance, a 3.25" frame depth, and 1.75" maximum glazing are important starting points.

• Use 3250XTC-G options when the project needs a historic-replica casement appearance with thermal-strut performance.

• Use Series 6400 when a historic project-out casement/projection appearance is a priority for monumental or institutional work. Review Series 4400 project-in or project-out options when coastal or higher-performance conditions drive the selection, subject to current product documentation.

• Use Series 2400 when blast-related requirements drive the product path. The project-out configuration is also the impact-related option listed on this page; confirm the exact operation, glazing, approval path, and supporting documentation before specifying or bidding.

• Use SV100 Zero Sightline Vents when the project needs an integrated operable vent within storefront or curtain wall framing, subject to framing and glazing compatibility review.

Common Casement Window Coordination Issues

Aluminum casement window selection often depends on details that are not obvious from the product name alone. Review these items before finalizing the Boyd series, bid scope, or submittal path.

• Operation and access: Confirm project-in, project-out, in-swing, or out-swing terminology shown in the drawings, along with hardware expectations, screen requirements, cleaning access, and surrounding clearance conditions.

• Glazing and frame depth: Match glass thickness, glazing makeup, frame depth, and thermal requirements to the exact product series.

• Performance documentation: AAMA/NAFS ratings, impact requirements, blast requirements, wind-load criteria, water performance, and energy requirements should be tied to the selected configuration and supporting documents.

• Historic appearance: For historic-replica work, coordinate muntin type, profile appearance, finish, existing opening conditions, and any authority-review requirements.

• Surrounding conditions: Panning, receptor systems, caulk backers, mullions, snap trim, anchors, substrates, and field dimensions can affect the final product path.

• Integrated storefront or curtain wall vents: For SV100 zero sightline vents, confirm the selected framing system, glazing condition, project-out operation, and compatibility requirements.

What to Send Boyd for Casement Window Review

To help Boyd review the right commercial aluminum casement window system, send as much of the following project information as available:

• Project name, location, and bid date or required response date.

• Architectural drawings, elevations, window schedules, and opening sizes.

• Requested operation type: project-in, project-out, in-swing, out-swing, casement, vent, fixed-adjacent, or mixed configurations.

• Specifications, AAMA/NAFS requirements, design-pressure requirements, thermal criteria, impact requirements, blast requirements, or historic-review requirements where applicable.

• Glazing requirements, glass thickness, finish requirements, screen requirements, hardware notes, and accessory scope.

• Existing opening conditions, field dimensions, substrates, receptor or panning needs, mullion conditions, and surrounding construction details where known.

Related Casement Window Resources

• Commercial Aluminum Windows, Doors & Storefront Systems - review Boyd product families by opening type, performance need, and project application.

• Project-Out Windows - review outward-operating commercial aluminum casement window options.

• Project-In Windows - review inward-operating commercial aluminum casement window options.

• XT High-Performance Thermal Line - review thermal-strut commercial casement, projected, and fixed window options.

• Historic-Replica and Steel-Replica Systems - review historic-replica window and storefront paths.

• Impact / Florida Product Approval Review - review selected impact-rated configurations where applicable.

• Blast-Resistant Aluminum Window Systems - review blast-related product paths and documentation needs.

• Commercial Aluminum Finish Options - coordinate anodized, painted, Kynar®, powder coat, and project-specific finish requirements.

• Direct Assistance - get help selecting the right Boyd series for your drawings, specifications, and bid scope.

Commercial Casement Window Questions

What is a commercial aluminum casement window?

A commercial aluminum casement window is an operable aluminum window hinged along one side so the sash swings open like a door. Unlike sliding windows, casement windows open by using operating hardware rather than sliding vertically or horizontally. Because the sash presses against the frame when closed, casement windows are often reviewed for tight weather sealing, unobstructed glass area, and ventilation in commercial, institutional, renovation, and specialty building projects.

Boyd Aluminum offers project-out and project-in casement windows, thermal-strut and historic-replica options, coastal casement/projection paths, and zero sightline vents depending on the selected series and project documentation.

What is the difference between casement, awning, hopper, and projected windows?

Casement, awning, hopper, and projected windows describe how the sash is hinged and which direction it opens. A casement window is hinged at the side and swings inward or outward like a door. An awning window is hinged at the top and opens outward at the bottom. A hopper window is hinged at the bottom and opens inward at the top. A projected window operates on hinges or arms that allow the sash to project outward or inward.

Boyd Aluminum casement and casement/projection series are offered in project-out and project-in configurations. Confirm the exact operation, hardware, clearance, and selected series against the current product documentation and project drawings.

What is the difference between project-out and project-in windows?

Project-out windows open toward the exterior, while project-in windows open toward the interior. Project-out is commonly reviewed when exterior-opening operation fits the wall condition and interior clearance should remain open. Project-in is commonly reviewed when exterior projection is restricted or when interior-side access, cleaning, or operation is preferred.

Project-out and project-in terminology may also appear as out-swing and in-swing in drawings or schedules. Boyd Aluminum can help project teams align that operation language with the correct casement or casement/projection series.

Are aluminum casement windows energy efficient?

Casement and projected windows close against compression seals, which is one reason they are often considered when limiting air infiltration is important. Total energy performance still depends on the frame, thermal barrier, glazing, weatherstripping, configuration, and installation details.

For projects with thermal targets, Boyd Aluminum offers thermal-strut casement series such as 3250XTC and 3250XTC-G. Confirm current ratings, glazing options, and configuration-specific documentation for the selected series before specifying, bidding, or submitting.