Preformed Ready to Tile Mega Niche 14 X 22 Recess Made in the USA Ready to tile niches and recess Shampoo and soap niches for wet or dry area Made of 2 lb High density compress Styrofoam Easy, Waterproof, Worry Free. The difference is CLEAR. 100% waterproof and will never rot or degrade End View : 14" ; Side View : 20" and Overall dimension : 15 3/4" x 23 3/4" x 4" Deep and Net Dimension : 12 1/4" x 20 1/2" x 3 1/2" Deep