The Nordyne 903662 Flue Assembly Roof Jack Kit is a venting component designed for compatible Nordyne gas furnaces and heating systems. It provides a properly routed passage for combustion exhaust gases, directing them safely from the furnace through the roof while maintaining appropriate venting conditions. This roof jack assembly supports safe and efficient furnace operation by help... https://www.partshnc.com/903662-nordyne-flue-assy-roof-jack-kit