The Reznor 211762 horizontal vent kit is made for use with Reznor UDZ model heaters sized 30 - 125 BTUH. The kit includes everything you need to horizontally vent your gas fired unit heater through the wall, including concentric adapter box assembly, screened exhaust grille, inlet guard, and concentric adapter box bracket.
A venting kit is required for the installation of any Reznor gas fired unit heaters. Please contact Customer Service at 1-877-847-0050 with any questions regarding installation and safety.