Polar Cam Lift Hinges are designed for installation where irregular or uneven floors interfere with operation of doors. Ductile iron cam rotates on a hardened roller bearing to lift the door, eliminating sag. Maximum Lift is approximately 1/2"
Hinge is reversible for left or right hand doors. Holes in strap are drilled and countersunk for 3/8" bolts. Cam and bracket are ductile iron, strap is steel, a heavy duty strap available for larger doors. Offsets available in 1-1/8", 1-1/4" and 1-5/8".