KL7R Hand Quadrant, 1/2″ Round Shaft, For Dampers Up to 30″

“Shaft Loc” Quadrants are stamped of heavy gauge steel and clearly indicate the position of the damper. The quadrant handle (1/2” round shaft) is unique in that it locks the shaft of the damper to it by means of a powerful friction holding device strong enough to cut into the damper shaft eliminating damper rattle. The shaft is easily locked with 1/2” open end wrench. Available for square or round ducts.