SL31 HD600 Heavy Duty Concealed Geared Continuous Hinge Length:83" (for 7'0" door) UL Certified for 90-minute fire

UL Certified for 90-minute fire doors and meeting NFPA 80 requirements

butt hinge

and government and military buildings

Formerly known as Monarch 25R

in any structure

SL31 HD600 Heavy Duty Concealed Geared Continuous Hinge Length:83" (for 7'0" door) UL Certified for 90-minute fireConcealed edge mount architectural grade aluminum hinges. No mortise required. For new construction or renovation retrofit. Hinge failure is the most common cause of entrance failure. The revolutionary SELECT geared continuous hinge puts an end to costly and frustrating hinge failure problems. Flush mounted (no door inset) For 1 3 4" doors SL31 HD600 geared continuous hinges are BHMA Grade 1 certified Lifetime lubrication Anodized after machining