Efficient Venting: Horizontal vent pipes are designed for residential tankless water heaters. They effectively vent exhaust gases from the combustion process, ensuring optimal performance and safety of the water heater. Excellent Quality: Constructed of T304 stainless steel for excellent corrosion and temperature resistance, providing sufficient durability and long-term reliability to reduce maintenance and replacement frequency. Easy Installation: Detachable horizontal vent pipe kit designed for tankless water heater, can be assembled in lengths to suit your needs. Wide Compatibility: The vent pipe is compatible with gas tankless water heaters that have a 3'' diameter exhaust port, also suitable for GASLAND water heater CS264LP/NG, CS360LP, CS422LP, CS528/NG, CS686LP, CS686NG, CG360/NG, CG422NG, CG422LP, CE360/NG, CE422LP, CE422NG, CE528LP, CE528NG, CE686LP, CE686NG, ensuring both safety and functionality for a variety of models. Also compatible with the following models: CZ422NG/LP, CZ360NG/LP, CZ264NG/LP, CX264, CX360, CX422, CA422, CA528LP/NG, CA528GLP, CA528W-LP/NG, CA686W-LP/NG. For best performance, we recommend using the GASLAND GSVP70T venting kit, GSVK75 Valve Kit, and water heater in combination. What's Included: This includes 3" Termination Hood,3" x 90 Degree Elbow, 3"x 1' Vent Pipe,3" x 1.5' Vent Pipe, 3" Wall Thimble and Gear Clamps. It's easy to combine with other vent pipes, but please ensure the diameter size matches your requirements. The 3 Inch Horizontal Vent Kit stainless steel contains the basic components required to vent a GASLAND tankless water heater through an outside wall. A back-flow preventer is included for cold climates to help prevent freezing of the water heater's internal piping during cold weather. Includes: 3-in diam. Termination Hood, 3-in diam. x 90 Degree Elbow, 3-in diam. x 1-ft Straight Pipe, 3-in diam. x 1.5-ft Straight Pipe, 3-in diam. Wall Thimble, and 3-in diam. Appliance Adapter with Backflow Preventer.