Champion Generator with #90A flange generator exhaust extension allows for safe venting of exhaust fumes from an unoccupied enclosed area. This is designed for units that have two-hole spark arrester cover plate #90A. To verify this is the correct kit, please ensure the cover has 'NO 90A' stamped on it. The buyer will receive: a custom low-profile stainless-steel exhaust to 1-1/2” ID tubing stub adapter, longer replacement screws, and two high temperature gaskets, and a spacer plate. The exhaust stub will need to be bolted onto the generator's stock muffler. Installation instructions will be provided. Thank you for looking! I ship quickly (typically the next business day) after order is received.