8" x 12" DuraVent DuraBlack Welded Stainless Steel Stove Pipe 8DBK-12SS This stove pipe is used for a single-wall connector pipe. Requires 18†clearance to combustibles. Subtract 1 1â„4†from length to calculate the installed length. 22-gauge strength Lock seams 18" clearance to combustibles 430-Alloy Stainless Steel Single-wall interior stove pipe for connecting wood stoves to manufactured chimney Economical and drip-free connection No need for cutting or crimping