This Light Box helps put light exploration where you need it to be. Rubber feet help keep the box in place on a table top or other surface. Fits 4 Prism Brick® bases (sold separately) for brick play. It features a super-strong acrylic top that evenly distributes light with reflective panels. The LED lights are energy-friendly, built to last (rated for up to 50,000 hours), and are ETL listed for use in the US and Canada. Five-foot power cord plugs into a standard 110 volt outlet. 5"H x 20-1/2"W x 21"D.