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DuraVent® 46DVA-FS, Galvanized Ceiling Firestop, Series: DirectVent Pro, 4 in ID, 6-5/8 in OD, Aluminum
DuraVent® 46DVA-FS, Galvanized Ceiling Firestop, Series: DirectVent Pro, 4 in ID, 6-5/8 in OD, Aluminum
