SELKIRK CORP 105230 Adjustable 90DEG Elbow, 5-Inch Double Wall Construction Non-Positional Locking System Makes Installation A Snap No Tools Required For Disassembly This product adds a great value This product is manufactured in Mexico 5" inch, 5RV-90, Adjustable, 90 Degree, Elbow, Round, Type B Gas Vent RV series offers round gas vent pipe and fittings for residential commercial and industrial applications Features a snap together, non-positional lock system, die formed ends and eliminates the need for all cutting, fitting and special engineering Has an improved joint design which provides for a secure connection in seconds Constructed with a galvanized steel outer casing and an aluminum inner liner