Hart & Cooley Adjustable Elbow, 4 in Size, 90 deg Angle, 4 in ID x 4-1/4 in OD Diameter, For Use With: Type B Gas Vent Systems, Steel, Galvanized, Domestic
The Hart & Cooley double-wall, air-insulated B-Vent system is secured by locking joints. Properly installed, the vent won't come apart through vibration, and offers protection against vent failure or fire hazard. The galvanized outer pipe and aluminum inner pipe provide protection against corrosion and external damage.
Hart & Cooley's simple two step engagement helps installers achieve installation quickly and easily. Simply engage pipe sections and secure by sliding the lock ring over security tabs. This unique system creates a strong connection without the use of screws.