Tested for use fully enclosed and has been designed in 5, 6, 7 and 8 inch sizes to carry up to 60' of height. Intended for use with the Insulated Tee as an interior or exterior support where the chimney has a lateral connection. Also useful where the pipe connection passes through a combustible interior or exterior wall. Braces may only be fastened to the wall above or below the plate for chimneys which penetrate through the wall.