Select Hinges SL21-85-CL-HD SL21 Swing Clear Continuous Geared Hinge

Hinge failure is the most common cause of entrance failure. The Select Continuous Geared Hinge is a revolutionary development that puts an end to the costly and irritation problems associated with hinge failure. Extruded 6063 T6 Aluminum alloy w/polyester thrust bearings. Heavy Duty &mdash Tested per BHMA standards. Up to 200 lb. doors (high-frequency) and up to 400 lb. doors (medium-frequency) without frame or door reinforcement up to 600 lb. doors (low-frequency) with the use of Rivnuts in the frame and door. SELECT SL11 geared continuous hinges are listed and tested by Underwriters Laboratories to meet the Positive and Negative pressure requirements of UL10B and UL10C and are in accordance with UBC 7.2 (1997). SELECT SL11 geared continuous hinges are for use on swinging single fire doors (max. door opening of 4'x10') or pairs of fire doors (max. door opening of 8'x10') including double egress installed in masonry or drywall. SELECT SL11 geared continuous hinges are rated for up to 1-1/2 hours for wood composite and wood core type fire doors. A special patented process can be added to increase the fire rating to 3 hours (NO FIRE PINS OR STUDS REQUIRED) for hollow metal or steel covered composite type doors.