Description

DORMA QDC311 SERIES SURFACE CLOSER

Certifications: ANSI/BHMA A156.4 Series—Grade 1 ANSI A117.1 Accessibility Code (ADA Compliant) UL/cUL listed (3 hour) for self-closing doors without hold-open UL10c positive pressure rated UL10b pressure rated

Materials Body: Cast aluminum Covers: Full-size architectural plastic Arms & brackets: Tri-pack standard; hold-open and dead stop arms optional Arms: Heat-treated carbon steel Springs: High-impact hand-drawn steel wire Pinions: Heat-treated chrome molybdenum steel Cylinders: Heat-treated free-cutting carbon steel Fasteners: Wood and machine screws standard; sex nuts and self-reaming, self-tapping screws standard

Door Weights and Sizes: BF option required to meet ADA compliance for standard arm and top jamb applications. 1: 33-55 lbs (15-30 kg) weight; 32” (0.81 m)-28” (0.71 m) width 2: 56-99 lbs (30-45 kg) weight; 36” (0.91 m)-32” (0.81 m) width 3: 99-143 lbs (45-65 kg) weight; 42” (1.07 m)-36” (0.91 m) width 4: 143-187 lbs (65-85 kg) weight; 48” (1.22 m)-42” (1.07 m) width 5: 187-264 lbs (85-120 kg) weight; 54” (1.37 m)-48” (1.22 m) width 6: 264-330 lbs (120-150 kg) weight; 58” (1.47 m)-54” (1.32 m) width

Door Closer Functions: Tri-pack arm (non-handed)