DuraVent High Wind Co Linear Kit Clearance Items The clean face design provides The clean face design provides a full firebox view and allows non combustible finish material to be closer to the fireplace than many other manufacturers Choose from a wide array of colors and flame patterns to perfectly match your mood or décor The unique design prevents any wind from causing a downdraft while also preventing the exhaust gas from mixing with the air intake The High Wind Cap mounts on an 18" x 18" flat plate for mounting to the top of the chimney and is available with either a 3" exhaust with 3" air intake OR 4" exhaust with 3" air intake