1250 4.5 in. x 4.5 in. US5

Full Mortise, Spring Hinge, Standard Weight, Square Corner Notes: UL approved for use on doors 4'0'' x 8'0'', but Hager does not recommend using spring hinges on doors over 7'0'' 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 3'0'' x 7'0'' or over 100 lbs require three spring hinges. Doors 150-180 lbs require four spring hinges. Certifications: ANSI K81071F Finishes: USP, US3, US4, US10, US10A, 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 4'0'' x 8'0'', but Hager does not recommend using spring hinges on doors over 7'0'' 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 3'0'' x 7'0'' or over 100 lbs require three spring hinges. Doors 150-180 lbs require four spring hinges.