DuraVent DuraBlack Increaser: connects a smaller stove outlet to a larger pipe
The DuraVent DuraBlack Increaser is a fitting that connects a smaller stove outlet to a larger stovepipe or chimney. It increases the diameter where the two sizes meet. DuraVent allows this increase, but not a reduction below the stove outlet size unless the stove maker’s instructions permit it. That’s why DuraBlack has no fitting for stepping down. DuraBlack is DuraVent’s single wall black stovepipe, the pipe that runs from a wood stove to the chimney inside the room. Choose the size change that matches your outlet and pipe: 5 to 6, 6 to 7, 7 to 8, 8 to 10, or 9 to 10 inches.
The painted DuraBlack line comes in diameters from 6 to 10 inches. Unpainted stainless steel is also available in 6 and 8 inch diameters. When planning the run, sliding connectors and telescoping lengths usually save you from cutting pipe. If needed, DuraBlack pipe can be shortened at its plain end with a hacksaw or tin snips. Need a 6 to 8 inch fitting that slides? See the DuraVent DuraBlack Slip Increaser with Trim. The DuraVent DuraBlack Increaser ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

















































