DuraVent® 46DVA-16AB, Double Wall Pipe, Series: DirectVent Pro, 4 in Diameter, 24 ga Inner Pipe/28 ga Outer Pipe Gauge, Aluminum, Black
DuraVent® 46DVA-16AB, Double Wall Pipe, Series: DirectVent Pro, 4 in Diameter, 24 ga Inner Pipe/28 ga Outer Pipe Gauge, Aluminum, Black