Our ProLine, ShowerLine and Wall Drain linear systems were all made to be installed with ¼” to 1” thickness tile, stone and slab material. Our height adjustable spacers will help ensure a perfectly flush installation between the tile and drain cover. Simply stack the spacers to the desired height, slide the spacers into the drain cover and place onto the drain body beneath. Unique to QuickDrain linear drain systems, our spacer can be used to adjust the height of the cover even after the tile or floor material has already been installed, saving countless headaches!