Trim Dimensions 1/4 in deep x 1/4 in channel opening MDF Backed Tile Cap Trim Installation This trim is designed to be used around the perimeter of MDF backed tiles as needed. It is installed by using a 1/2 in wide double sided tape (please visit our Accessories page). THE MAXIMUM LENGTH AVAILABLE IS 48 INCHES. ORDERS PLACED THAT EXCEED THIS LIMIT WILL BE ADJUSTED ACCORDINGLY.