Bommer

4 x 4 x Square Corners Spring Hinge, Pair, Bommer LB4310-400

SKU: BOM-LB4310-400
$31.75 $52.92Save $21.17/ unit
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The Bommer LB4310-400 is a pair of 4" x 4" square corner, single-acting spring hinges designed for door hardware applications. Constructed from durable steel, this unit includes the tension adjusting tool, locking pins, and installation hardware necessary for setting the closing force.

These hinges are UL Listed (R-4667 653MD) and certified Grade 1 for high-cycle applications, making them suitable for fire door installation. They accommodate both wood and metal doors via the ANSI template screw hole pattern.

Bommer made in the USA
Other
Hinge Material Durable Steel
Height 4"
Width 4"
Corners Square Corners
Gauge of Metal .096 (standard)
Number of Holes 8
Wood Screws #10 x 3/4"
Machine Screws #10-24 x 1/2"
Available Finishes 11

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4 x 4 x Square Corners Spring Hinge, Pair, Bommer LB4310-400 $31.75