1250 3.5 in x 3.5 in US3 Bright Brass

Full Mortise, Spring Hinge, Standard Weight, Square Corner Notes: UL approved for use on doors 4 ft0 in x 8 ft0 in, but Hager does not recommend using spring hinges on doors over 7 ft0 in in favor of hydraulic door closers. For maximum versatility use all spring hinges or a combination of spring hinges and ball bearing or anti-friction hinges. Do not use plain bearing hinges. Strong wind conditions, drafts, carpeting drag, twisted/misaligned frames, or weatherstripping on doors may require additional spring hinges. Full spring tension may not be required on all hinges. Doors over 3 ft0 in x 7 ft0 in or over 100 lbs require three spring hinges. Doors 150-180 lbs require four spring hinges. Certifications: ANSI K81071F Finishes: USP, US3, US4, US10, US10 A, US10B, US26D Options: Available with hospital tip (HT) - voids UL. Available with raised barrel (RBB/RBS) - UL approved. Notes: UL approved for use on doors 4 ft0 in x 8 ft0 in, but Hager does not recommend using spring hinges on doors over 7 ft0 in in favor of hydraulic door closers. For maximum versatility use all spring hinges or a combination of spring hinges and ball bearing or anti-friction hinges. Do not use plain bearing hinges. Strong wind conditions, drafts, carpeting drag, twisted/misaligned frames, or weatherstripping on doors may require additional spring hinges. Full spring tension may not be required on all hinges. Doors over 3 ft0 in x 7 ft0 in or over 100 lbs require three spring hinges. Doors 150-180 lbs require four spring hinges.