The 6 in. Inline Extension Exhaust Kit (Rheem RTG20354A) is designed for efficient venting of gas appliances. This kit is compatible with Rheem tankless water heaters, ensuring optimal exhaust flow. Constructed from durable materials, it measures 6 inches in diameter, providing a reliable solution for extending exhaust systems. The kit meets industry standards for safety and performance, making it an essential component for proper installation. Ideal for residential and commercial applications, it enhances the efficiency of your heating system.