This company has released new air-stop dampers with a gasket. The dampers are available in 4-inch through 24-inch sizes. The company's 6-inch damper is mounted with 1/4-inch diameter economy hardware. The Underwriters Laboratories-approved 1/16-inch Santoprene is sandwiched between two 26-gauge disks. The blades are also available in 20-gauge steel, stainless steel and aluminum. The 8-inch 20-gauge V-blade damper is equipped with half-inch round axles. The V-blade damper can be assembled with 3/8-inch square hardware or a combination of both.
Alan Manufacturing Inc., 3927 E. Lincoln Way, Wooster, OH 44691; (800) 435-2525; fax (877) 333-2526; www.alanmfg.com.
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