This Firman Compatible Generator exhaust extension allows for safe venting of exhaust fumes from an enclosure (ZombieBox) or unoccupied space, like a shed our outbuilding.The buyer will receive:(1) exhaust adapter(1) 2ft. length of 1-1/2 I.D. flexible galvanized exhaust pipe(1) U-bolt clampThis adapter fits MOST Firman generator mufflers.Fits mufflers with 1-1/2andquot; to 1-3/4andquot; apart, spark arrestor hole spacing.The exhaust adapter bolts onto the generator's stock muffler. Remove the existing spark arrestor and bolt to muffler outlet, re-using original bolts. x Muffler bolts and gasket NOT included - Re-Use your originals Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.