Celebrating their 25th anniversary, VPI Quality Windows is known throughout the western United States for having superior window technology and is an industry leader in manufacturing investment grade vinyl windows and patio doors for architects, contractors and homeowners.
VPI Endurance Series
VPI Quality Windows presents the Endurance Series–perfect for new construction or remodeling applications. In a world where demanding specifications and uncompromising jobsite testing is a way of life, the Endurance Series excels, surpassing industry standards.
VPI diligently applies a consistent set of design and manufacturing principles to deliver industry leading water intrusion resistance. Reinforcement of framing members and flexible panel functionality, eliminating window mulling significantly reduces potential water penetration pathways. Our manufacturing process is systematic, documented, controlled and constantly improving.
Endurance Brochure (pdf)
VPI Envision Series
Commercial Projection Windows
VPI Quality Windows presents the Envision Series – perfect for new construction or retrofit applications. Envision combines the proven energy efficiency of PVC with the robust structural strength needed in high wind load applications.
Provides new design freedom with multiple fused colors, available in a variety of weather-tight configurations.
A vinyl window designed to meet the strict structural standards of AW classification, provide thermal performance, and offer the structural integrity of aluminum windows.
Patented dual-coextrusion, color infused process.
Available in fixed, hopper,in-swing casement and hinged door operation types.