About Quaker Windows & Doors
Quaker Windows & Doors is a custom manufacturer of aluminum and vinyl windows and doors headquartered in Freeburg, Missouri, where it was founded in 1949. The company operates across residential, light commercial, and institutional markets, producing standard and custom-configured windows and doors to project-specific requirements. Quaker is recognized for its manufacturing flexibility — the ability to produce non-standard sizes, configurations, and assemblies that fall outside the catalogs of larger production manufacturers.
Quaker's product line spans aluminum single-hung, double-hung, casement, awning, sliding, and fixed windows; aluminum storefront-adjacent systems for light commercial applications; vinyl windows and patio doors for residential use; and curtain wall and entrance systems for commercial projects. This breadth allows Quaker to serve both residential architects and commercial contractors with a single manufacturer relationship, though the company's primary identity is in aluminum windows and systems for institutional and commercial-adjacent applications.
For specifiers working on projects that require aluminum windows in non-standard configurations — school buildings, institutional renovation, custom residential with commercial-scale windows, or light commercial mixed-use — Quaker is a manufacturer worth evaluating. The company's Midwest manufacturing base and independent ownership support responsive project-specific service that national volume manufacturers often cannot provide.
Company Snapshot
Product Lines
Aluminum Windows
Custom-configured aluminum windows for residential, institutional, and light commercial projects in a full range of operating types and sizes.
- Single-hung, double-hung, casement, awning, sliding, and fixed
- Thermally broken and non-thermally broken options
- Non-standard sizes and custom configurations
- Multiple anodized and painted finishes
Vinyl Windows and Patio Doors
Residential vinyl windows and patio doors for new construction and replacement projects.
- Double-hung, casement, and sliding configurations
- Vinyl patio sliding doors
- ENERGY STAR qualified options
- Residential scale and pricing
Commercial Aluminum Systems
Storefront, curtain wall, and entrance systems for light commercial and institutional construction.
- Aluminum storefront framing
- Curtain wall assemblies
- Commercial entrance doors
- Institutional project experience
Common Applications
Institutional and Light Commercial
Schools, government buildings, and light commercial construction where aluminum windows in custom sizes and configurations are required.
Custom Residential
Custom homes requiring commercial-scale aluminum windows, non-standard sizes, or configurations outside the catalog of mainstream residential manufacturers.
Residential New Construction and Replacement
Production and replacement residential projects served by Quaker's vinyl window and patio door lines.
What To Know
Custom configuration capability
Quaker's manufacturing flexibility accommodates non-standard sizes, shapes, and assemblies that require project-specific production rather than catalog selection.
Dual residential and commercial capability
The combination of residential vinyl and commercial aluminum lines under one manufacturer simplifies procurement for mixed-use and transitional projects.
Independent Midwest manufacturer
Independent ownership and Midwest manufacturing support responsive project service and relationship-based dealer and contractor engagement.
Editorial profile based on Quaker Windows & Doors public product and company materials; last reviewed April 30, 2026.