DuraVent DuraPlus 6 in. D X 6 in. D 15 deg Aluminum/Galvanized Steel Elbow Kit

Elbow kit to use for offsets around obstructions such as rafters, ridgepoles or joists. May have two pairs of elbows, if needed. Offsets greater than 30 degrees are no permitted in accordance to UL 103 standards. Elbow swivels 360 degrees at base (angles are NOT adjustable). A pair of elbows is required to return an offset chimney back to vertical.DuraPlus triple-wall construction,2 in. clearance to combustibles,0.018 in. galvanized steel outer wall, 0.018 in. aluminized intermediate liner and 0.016 in. 430 stainless steel inner liner,Insulated layers of ceramic blanket plus ventilated air space,Precision twist-lock connection,UL listed to UL 103 HT (MH7399)