7" DuraVent DuraBlack Double-Skirted Stove Pipe Adaptor 7DBK-ADDB This double-skirted stove pipe adaptor is used to adapt DuraBlack stove pipe to appliance flue outlets. The outer wall covers appliance flue outlet. 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