• Conforms to BHMA, ANSI A156.17, Grade 1
• ANSI K51071F

• 3-1/2" - 3/4 X 9
• 4" - 1 X 9

• 3-1/2" - 10R, US15, 1D, US26, US26D, US3, USP
• 4" - 2D, US3, 3LB, US4, ABA/US5, 10R, US15, AN/US15A, US26, US26D

Steel

45-75 lbs.

• For maximum versatility use all spring hinges or a combination of spring hinges and ball bearing hinges. Do not use plain bearing hinges.
• Full spring tension may not be required on all hinges.
• Strong wind conditions, drafts, carpeting drag, twisted/mis

Square Corners, Spring Hinge with Fasteners

• 3-1/2" X 3-1/2"
• 4" X 4"