AmeriVent® Oval Firestop Spacer, For Use With: Type B Gas Vent Systems, 2 x 4 in Wall, Steel, Galvanized, 7-1/4 in W x 1-1/2 in D x 2 in H, Import
Dimensions : 7-1/4 in W x 1-1/2 in D x 2 in HDomestic/Import : ImportFinish : GalvanizedMaterial : SteelSpecifications : 2 x 4 in WallSuitable For Use With : Type B Gas Vent Systems