DuraVent DuraBlack Slip Increaser with Trim: a sliding connection from 6 inch pipe to 8 inch chimney
The DuraVent DuraBlack Slip Increaser with Trim is a sliding fitting for the top of a 6 inch stovepipe run. It joins that pipe to an 8 inch DuraTech, DuraPlus, or DuraLiner chimney at the ceiling support box or finishing collar. Those are the connection points where the stovepipe meets the chimney. It also extends 5 to 15 inches to fill the gap without cutting pipe. DuraBlack is DuraVent’s single wall black stovepipe, the pipe that runs from a wood stove to the chimney inside the room. The trim collar hides the ceiling opening, but DuraTech, DuraTech Premium, and DuraTech Canada connections don’t need it.
Keep 18 inches of air between single wall pipe and walls or ceilings made of material that can burn. If your stove needs to sit closer, DuraVent’s double wall DVL pipe reduces that spacing to 6 inches. Build upward from the stove outlet collar or adapter, with each section’s lower end fitting inside the section beneath it. Need a different size change? See the DuraVent DuraBlack Increaser step up fitting. The DuraVent DuraBlack Slip Increaser with Trim ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

















































