The Z-Flex 3 Inch Horizontal Vent Kit in stainless steel contains the basic components required to vent a tankless water heater through an outside wall. A back-flow preventer is included for cold climates to help prevent freezing of the water heaters 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.
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