Bommer LB4377-400BP 4" x 4" x 5/8" Radius x Sq Corner THERMA-TRU Door Spring Hinge
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
- Special Hole Template - THERMA-TRU Doors
- Bommer LB4377-400 Dimensions Diagram (PDF)
Sold as a pair (2 Hinges).