8" DuraVent DuraBlack Stainless Steel Tee with Clean-Out Cap 8DBK-TSS This tee with clean-out cap is used to provide a solid connection for rear exit appliances and appliances that require a barometric damper. The added cap makes cleaning and maintenance simple. 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