Predator 2500 Generator Ducar Screen 22-002 Spark Arrestor flange 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 Ducar Screen 22-002. To verify this is the correct kit, please ensure the screen cover has ‘Ducar Screen 22-002' stamped on it. The buyer will receive: a custom low-profile stainless-steel exhaust stub with a male 3/4" NPT thread, 3/4" NPT to 1-1/2" adapter, longer replacement screws, and a high temperature gasket, and the specified length of 1-1/2 I.D. flexible high temperature silicone lined exhaust tubing, and the proper size lined hose clamp. The exhaust stub will need to be bolted onto the generator's stock muffler. Installation instructions will be provided.