Zinc-plated heavy gauge DIAL with Handle for round or rectangular duct applications. 18-gauge steel frame – 2 gauges heavier than the competition. Locks securely; 16-gauge steel handle clearly shows damper position. Back up washers available for optimal leak resistance – 304623 (LRK-25). Off-set mounting holes allow for full open position. ¼" & 3/8" DIAL for round or rectangular duct applications. ¼" DIAL used for light commercial and residential applications with reinforced handle.

Product #308003 - 1 Case w/ 100 Dial-A-Matic Sets, 1/4" Square
Product #305473 - 1 Case w/ 25 Stainless Steel Dial-A-Matic Sets, 1/4" Square
Product #308004 - 1 Case w/ 100 Long Dial-A-Matic Sets, 1/4" Square
Product #308007 - 1 Case w/ 100 Dial-A-Matic Dials, 1/4" Square
Product #308005 - 1 Case w/ 100 Dial-A-Matic Sets, 3/8" Square
Product #308006 - 1 Case w/ 100 Long Dial-A-Matic Sets, 3/8" Square
Product #308009 - 1 Case w/ 100 Dial-A-Matic Dials, 3/8" Square
Product #305522 - 1 Case w/ 100 Large Dial-A-Matic Sets, 3/8" Square
Product #305366 - 1 Case w/ 100 Large Dial-A-Matic Dials, 3/8" Square