Bommer
4 x 4 x 5/8 Radius Stainless Steel Spring Hinge, Pair, Bommer LB4392C-400-630
The Bommer BOM-LB4392C-400-630 is a pair of heavy-duty spring hinges, constructed from 304 Stainless Steel and finished in Satin Stainless Steel. These hinges are UL Listed for fire door applications and are certified Grade 1 for high-cycle door closer use.
Each unit measures 4" x 4" with 5/8" radius corners. They utilize an ANSI template screw hole pattern for installation into wood or metal doors and include a tension adjusting tool, locking pins, and mounting hardware.

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