Duty Rating

For 1-3/4"44.45 mm doors except where noted;
48" maximum door width.

GEARED

Heavy Duty 300 (HD300):

Up to 300 lb.136.1 kg, high-frequency

Heavy Duty 600 (HD600):

Up to 600 lb.272.2 kg, high-frequency

Heavy Duty (LL):

Up to 1,000 lb.453.6 kg, low-frequency

FREQUENCY DEFINITIONS (OPENS/CLOSES)

Low-frequency = 40x per day or less
Medium-frequency = Up to 80x per day
High-frequency = More than 80x per day and/or abused doors (ones that often get slammed against a stop, operate in a school, etc.)

Load/Frequency Rating For 1-3/4" / 44.45 mm doors except where noted. 48" / 1219 mm max. door width in 16 gauge hollow metal (min.) or 1/8" / 3 mm aluminum (min.). Frequency of use and door weight determine the hinge duty needed. SELECT Geared Continuous Hinge model numbers indicate appropriate hinge duty.

Heavy Duty [HD300] For high-frequency doors up to 300 lb. / 136 kg. without frame or door reinforcement.

Heavy Duty [HD600] For high-frequency doors up to 600 lb. / 273 kg. Rivnuts are recommended in the frame and/or door when the door exceeds 450 lb. / 182 kg.

Heavy Duty [LL] Our HD600 hinge with additional fastener holes for low- to medium-frequency doors up to 1,000 lb. / 454 kg., including most lead-lined doors. Rivnuts are recommended in the frame and door on extremely tall, extremely heavy or extra-wide doors.

Note: SL60/SL62 57"144.78 cm Toilet Partition Hinges are made for high-frequency partition doors 36"91.44 cm wide (max.) weighing up to 80 lb.36 kg without door or frame reinforcement.