This is exactly what I was looking for - a perfect dimension to fit between my desk legs, without the unnecessary "tongue" and a heavy weight carpet protector. A bit difficult to slide into place (since it doesn't slide as it's design intent- those little protrusions on the bottom are sharp) so I used a couple wooden dowels, slid it into place and pulled out the dowel rods (pieces of cardboard would work). It did come in the mail rolled in a cardboard box and I had to lie it flat with heavy books to flatten it as the directions indicated - took a day or so but now lies perfectly flat. Nice product.