3' x 5' x 1/2", Hardiebacker 500 Cement Board, For Walls & Floors, Delivers Superior Protection Against Moisture Damage & Mold Growth, Contains No Paper Facing, Which Serves As A Food Source For Mold, Or Gypsum, Which Can Disintegrate With Continuous Moisture Exposure, Ideal Choice For Wet Area Walls, Its Smooth Surface May Be Painted, Textured, Wallpapered, Or Tiled.