4 in x 4 in Full Mortise Spring With Non-Removable Pin Squared Hinge

The Global Door Controls 4 in. x 4 in. steel hinge functions as a full mortise single acting spring hinge. Recommended for use where automatic self-closing of a door is required. The knuckled hinges are adjustable, and the spring tension can be in
The Global Door Controls 4 in. x 4 in. steel hinge functions as a full mortise single acting spring hinge. Recommended for use where automatic self-closing of a door is required. The knuckled hinges are adjustable, and the spring tension can be increased or decreased by using included adjusting tool. For maximum versatility use 3 hinges on required opening. Full spring tension may not be required on all hinges but allows for greater adjustment.   Adjustable spring hinge for automatic self closing doors Made from solid steel for durability and longevity Squared hinge with non-removable pin  Full mortise spring, plain Bearing Spring hinge for automatic self closing door Installation: template screw hole locations Steel base material with steel pin Packed with wood and machine screws Meets NFPA 80 for 3 hour fire rating Conforms to ANSI/BHMA - K81071F for self-closing hinges UL R19063 listed for A label fire doors

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