Check the listing for details. GenExhaust Universal Generator 1" steel exhaust extension (Hardware only). Condition: New. Listed at 26.00 USD. This exhaust extension allows for safe venting of exhaust fumes from an unoccupied enclosed area - this will allow your expensive unit to stay dry and secure while maintaining portability.This adapter is designed for use on stock muffler ports that are less than 15/16 inch (24 mm) diameter, weld bead diameter under 1 inch (25-1/2 mm) and length of less than 1 inch (25-1/2 mm) long. See pictures for further explanation. All dimensions are with the spark arrester removed. The spark arrester will have to permanently removed for this modification. The buyer will receive: a custom low profile exhaust to tubing stub. The exhaust stub will need to be welded onto the generator's stock muffler. A mechanic/exhaust/muffler auto repair shop can typically perform the weld if you are not able. Illustrated instructions will be provided. Custom hose size/length and exhaust stubs are available. I ship quickly (typically the next business day) after order is received. Please check out my seller feedback and my store as I strive to provide a top quality solution and customer support with fast delivery. Thank you for looking!http://stores.ebay.com/cubstman1998