Special door hinge size and template hole location designed to fit preparation of door and frame manufactured by THERMA-TRU door. Pivot point aligns with residential butt hinges gage .085 to .109

Also see: Bommer Special Size Spring Hinges.

Easily adjustable Spring Tension. UL Listed for fire door applications. Fit THERMA-TRU Door Frame. Packaged with mounting screws.

Specifications for Bommer LB4377-400BP THERMA-TRU Door Spring Hinge

• Hinge Material: Durable Steel
• Height: 4"
• Width: 4"
• Corner: 5/8" Radius Leaf
• Corner: Square Corner Leaf
• Thickness: .096"
• Number of Holes: 8
• Wood Screws: #10 x 3/4"
• Machine Screws: #10-24 x 1/2"
• BHMA Certified Grade 1 for 1 million cycles.
• UL Listed R-4667 653M
• Adjustable Spring Torque
• Non-Handed
• Special Hole Template - THERMA-TRU Doors
• Bommer LB4377-400 Dimensions Diagram (PDF)

Sold as a pair (2 Hinges).

** This item is being discontinued. Very limited quantities available.