The DirectVent Pro Ceiling Support/Wall Thimble Cover is used to create a finished look to your installation. The decorative cover, painted black, is designed for horizontal (through-wall) or flat ceiling installations. Sealed with insulation to keep out air leakage and easily fits over the Wall Thimble Face Plate. DirectVent Pro is a complete venting system designed for use with gas direct vent stoves, heaters, and fireplaces.