12x18 SS Access Door - Horizontal

12" X 18" TYPE B GAS VENT INCREASER, GALVANIZED STEEL, 1" MINIMUM CLEARANCE TO COMBUSTIBLE, UL LISTED, DIMS:7 1/2"H X 12" BOTTOM DIAMETER X 18" TOP DIAMETER, WEIGHT:4 LBS 4 OZ, BULK, MADE IN MEXICO.