AmeriVent 6EWT Series Wall Thimble, 6-9/16 in ID x 3-1/4 in L Dimensions, 0.018 ga, Galvanized Steel
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Adjusts for various wall thicknesses from 4 to 6 in. Provides proper clearance for vent from combustibles and serves as a firestop.
California residents see Prop 65 WARNINGS