McKinney 1502 Full Mortise Single Acting 4-1/2" x 4-1/2" Spring Hinge
Spring hinges are an alternative to door closing devices. Generally two hinges on the door must be spring hinges to provide adequate closing force. NFPA requires a minimum of two (2) spring hinges on labeled doors
This non-handed spring hinge series is adjustable and tension can be added or reduced by means of a hex key that is provided
Locking screw provides tamper-resistance after the proper tension has been set. For unparalleled tamper resistance and security choose the TRS option
Caution: Use of gasketing for smoke or sound protection, wind conditions or unbalanced air pressure, twisted or misaligned frames or doors, door bottoms, improper latch adjustment may prevent doors from latching. Additional spring hinges may be required.