8" DuraVent DuraBlack Tee with Clean-Out Cap 8DBK-T 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. 24-gauge strength Lock seams 18" clearance to combustibles Painted black Single-wall interior stove pipe for connecting wood stoves to manufactured chimney Economical and drip-free connection No need for cutting or crimping