Duro Dyne® 8051 Quadrant Damper Set, For use with 20 in Damper, Domestic
Duro Dyne® Quadrant Damper Set, For Use With: 20 in Damper, 3/8 in, Domestic
These heavy gauge Plated Steel quadrants are designed with excellent handle action as well as quick wing nut adjustment and locking of the damper. The frame is marked to show the exact position of the damper. For use on square or round ducts.