Bommer
4 x 4 x 5/8 Radius x Sq Corner THERMA-TRU Door Spring Hinge, Pair, Bommer LB4377-400BP
The Bommer LB4377-400BP is a specialized door spring hinge, sold as a pair, designed specifically for THERMA-TRU door applications. Its special size and template hole location accommodate the unique preparation of THERMA-TRU doors and frames.
Constructed from durable steel, the hinge features an easily adjustable spring tension. It is UL Listed for fire door applications and fits residential butt hinges ranging from .085 to .109 gage. Packaged with mounting screws.

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