Double-Strength Center Hinge Design Eliminates Sagging


Double-Strength Design Reduces Deflection and Resists Wind-Loads

Our unique, “dogleg” center hinge design of our bi-fold door, formed by the rectangular steel members on both the top and bottom door panels, provides a “double-strength” beam that virtually eliminates deflection in the full-open position. This strength, combined with the strength of the welded-steel trusses on the inside of the door, provides even greater resistance to wind-load when the door is closed. A floor cane-bolt on all doors over 40′ wide further resists wind-loads.


Double-strength center hinge design eliminates sagging