480" Wide BI-Fold Folding Door - Multiple Heights Series (Info Below):Certified This model is designed for

This model is designed for those who want more control over their outdoor environment

Sealing: Three-layer weather-seal system for improved air and water resistance

Thermal Break Aluminum Frame: Minimizes heat transfer

Semi-assembled

480" Wide BI-Fold Folding Door - Multiple Heights Series (Info Below):Certified This model is designed forUpgrade your space with our high performance Thermal Break Aluminum Sliding Glass Door, a top tier choice for modern home and commercial applications. Engineered for maximum durability, thermal efficiency, and superior wind resistance, this heavy duty exterior sliding door combines sleek aesthetics with cutting edge functionality. Why Our Bi Fold Doors Stand Above the Rest Not all bi fold doors are created equal. Unlike the mass produced, low cost