Decorative foam ceiling tiles: Majesty Design is simplistic but elegant making it an ideal design for most any space. It is a top selling design. It can be glued over most stable ceiling surfaces including popcorn ceilings and painted to your likeness. The tiles are made from extruded polystyrene. The size is 19-5/8 in. x 19-5/8 in. Depth of the design is 3/16 in. These tiles will add beauty, sound dampening and insulation. - Made of light weight extruded polystyrene which makes these ceiling tiles very easy to install - Ceiling Tiles Can be easily glued over most ceiling surfaces including popcorn ceilings - Each Tile covers about 2.7sqft. When purchasing in Packs of 8pc the pack coverage is 21.6 sqft. - Paintable with most water based paints using roller, brush or sprayer - Ceiling Tiles that dampens sounds and provide sound insulation - Do it yourself