This tankless gas water heater vent kit is built for indoor gas tankless water heaters, with a horizontal design made for direct vent systems that can connect to most standard vent pipes. It is constructed from premium stainless steel, which resists corrosion, high temperatures, and wear to deliver long-lasting performance and cut down on frequent maintenance or replacements. The full kit includes a 3 in. stainless steel vent pipe, a 3 in. OD vent elbow, a chimney rain cap, aluminum foil tape, and 2 pipe clamps. Its optimized internal structure with a smooth inner wall ensures steady, uninterrupted ventilation to keep your water heater running at its best, while the rain cap blocks rain and snow from entering the vent system to add critical safety protections. The crimped end design simplifies installation, with easy steps to align, insert, and secure the kit using the included clamps and tape.