4" plated steel single acting spring hinge with 5/8" radius corners. This is a full mortise hinge available in 8 different finishes. The hinge leaves are 0.11" thick and the spring tension is adjustable. The maximum recommended door weights are as follows: using 1 spring hinge and 2 butt hinges - 60 lbs, 2 spring and 1 butt - 85 lbs, 3 spring - 110 lbs.
Hardware Tip:
These hinges are mounted just like a butt hinge and are mortised into the edge of the door and the door frame. Learn about hardware >