Flat Seal With DamperFlat Seal With Damper, 3/8 in Continuous Rod Damper, 20 in, Fits Duct Size: 19-7/8 in, 19 in LDescriptionECCO Manufacturing™ Flat Seal With Damper, 3/8 in Continuous Rod Damper, 20 in, Fits Duct Size: 19-7/8 in, 19 in Length, 24 ga Gauge
ECCO Manufacturing, Flat Seal, 504050, 20in, Fits Duct Size: 19-7/8in
