4" diameter, grade-304 stainless steel stove pipe section for a Chofu Wood-Fired Hot Tub Heater. 8' of pipe is necessary to produce the optimal air-draw through the stove for a fast, efficient heating rate (a shorter length will produce a slower heating time). Using more than 8' of pipe produces a hotter fire but will reduce fuel efficiency because more of the flame is drawn up into the chimney. Remedy this by installing a stove damper. If more than 8' of stove pipe is used, it must be supported to ensure stability. Sheet metal screws and a cobalt drill bit are provided with the Chofu Wood-Fired Hot Tub Heater for fastening the stove pipe connections.
One 2' length section, 4" in diameter.