We are now selling the R.C. Musson Dirt Catcher Tiles DC225. The tiles measure 1/2″ thick x 19-11/16″ x 19-11/16″, for a coverage of 2.69 square feet per tile. They are sold in boxes of 12 tiles only, so the coverage for a box is 32.28 square feet. They are made of 100% solution dyed polypropylene and are designed for extreme traffic conditions. The Dirt Catcher Tiles DC225 come in 4 colors, Heath, Mink, Smoke, and Tan. If you are going to glue them down, we also offer the 320 adhesive which is under the related products. This product is sometimes call Carpet Tiles, or Entrance Carpet Tiles. If you have questions on this product, R.C. Musson Dirt Catcher Tiles DC225, or any other entrance matting, call or email our Entrance Mat Experts.