Z-Vent 4" Horizontal Tankless Vent Kit & Sealed Room Fresh Air Intake
Is the room fairly small where your 4" exhaust tankless water heater is to be installed? Does the room lack sufficient supply of fresh air? Then you must use a vent kit like this one that brings fresh air into the tankless unit or room.
qty. one 4" diameter termination hood
Note: This kit does not include a condensate drain pipe which may be required depending on your water heater manual guidelines and building code.
• Vent material: AL29-4C stainless steel, except for the fresh air intake hood