DuraVent
8" Dura-Vent Dura/plus 15 Deg Galvalume Elbow Kit, Includes 2 Adj Elbows, 1 Elbow Strap. Use for offsets around obstructions such as rafters, ridgepoles, or joists. May have a pair of elbows if needed. Offsets greater than 30° are not permitted...