Wosijm SP20285 Horizontal Vent Termination Kit – Tankless Gas Water Heater, 2 in, Exterior Wall

Overview

The Wosijm SP20285 Horizontal Vent Termination Kit is designed to vent high efficiency fossil fuel appliances, including tankless gas water heaters and compact furnaces. The kit provides a measured, efficient path for exhaust and intake, helping maintain safe airflow, steady performance, and reliable operation in a range of outdoor conditions. Thoughtful design considers both installation flexibility and the realities of exterior walls in modern homes.

Low profile design and exterior aesthetics

The kit keeps piping tucked away and adds a seamless finish to exterior walls. The low profile form minimizes visibility while still delivering robust airflow for venting. This approach helps the exterior look clean while maintaining functional venting lines.

• Low profile appearance that blends with various exterior finishes
• Concealed piping reduces visible clutter and protects from weather exposure

Compatibility, versatility and installation

The kit is compatible with 2 inch PVC or ABS piping and features a center to center spacing of 4 inches. It supports horizontal through wall exits and vertical roof penetrations, offering flexibility for different layouts. The package includes one SP20285 kit and screws for a complete install.

• 2 inch PVC or ABS compatibility for common venting setups
• Center to center spacing of 4 inches for accurate fit
• Supports horizontal through wall and vertical roof installations
• Includes SP20285 kit and screws for a complete solution

Practical installation guidance

Before cutting into the wall, confirm the overall dimensions and clearances for your setup. If the existing pipe is longer than the kit allows, allow about 1 inch extra on the exhaust side and 2.25 inches on the intake side to achieve proper seating. Exterior connections require no additional fittings with this kit.