About Western Window Systems
Western Window Systems designs and manufactures aluminum moving glass walls, window walls, doors, and windows for projects that emphasize indoor-outdoor living, broad glass openings, and modern sightlines. The brand is especially visible in contemporary residential, hospitality, and light commercial work where large panel sizes, narrow frame profiles, and integrated door-window systems are central to the design.
Founded in Phoenix in 1959, Western Window Systems built its reputation around expansive sliding, folding, hinged, and fixed glass systems. Its current product catalog includes Classic Line and Vantage Line systems, with multi-slide doors, sliding glass doors, bifold doors, pivot and hinged doors, fixed/window wall assemblies, and complementary operable windows.
Western Window Systems is part of the MITER Brands portfolio following MITER Brands' 2024 acquisition of PGT Innovations. For specifiers, the company is most relevant when a project needs large aluminum openings, coordinated door and window families, and product data for custom residential or commercial-style fenestration packages.
Company Snapshot
Product Lines
Classic Line / Series 600
Aluminum moving glass walls and windows built around large openings, narrow sightlines, and coordinated fixed, hinged, and sliding systems.
- Multi-slide and sliding glass doors
- Fixed window and window wall assemblies
- Complementary hinged, awning, casement, and fixed windows
Vantage Line / Series 7000 and 8000
Design-forward aluminum systems focused on energy-smart performance, cleaner profiles, and modern residential and commercial applications.
- Moving glass wall systems
- Sliding and fixed window configurations
- Modern large-opening packages
Architectural Door Systems
Pivot, hinged, bifold, and multi-slide door configurations for projects where the opening itself is a major design feature.
- Large panel sizes
- Multiple sill and threshold conditions
- Options for expansive indoor-outdoor transitions
Common Applications
Custom Residential
Modern homes using wide glass openings, view corridors, pocketing doors, and coordinated door-window elevations.
Hospitality and Amenity Spaces
Restaurants, clubs, pool houses, and shared amenity areas where large openings connect interior space to patios or terraces.
Light Commercial
Commercial-style punched openings and storefront-adjacent conditions where aluminum durability and large glass areas matter.
What To Know
Indoor-outdoor opening specialist
The product family is organized around moving glass walls, window walls, and matching windows rather than only standard replacement window sizes.
Aluminum system focus
Western Window Systems is strongest where aluminum frame strength, slim profiles, finish options, and large panel movement are project priorities.
Coordinate structural and water details early
Large doors and window walls need early planning for headers, deflection, sill drainage, threshold height, screen strategy, and installation access.
Editorial profile based on Western Window Systems and MITER Brands public product and company materials; last reviewed April 30, 2026.