•Used when a 2100 chimney passes horizontally thru a combustible wall
•Adjustable from 4" to 8" for a variety of wall thicknesses
•Ideal for those out of the ordinary installs
•Includes a 10"L finishing cover to go over the 2100 chimney pipe on the interior
•Exterior side of the wall pass-thru is satin coat steel "paint ready" to match the home exterior
•Outside wall plate can be filled with your choice of insulation