The Arcadia UV Flood is a high output, energy efficient, compact bulb. It is 24w and 36cm in length and comes with a dimpled reflector which allows light to be emitted at 45 degrees. This reflects the light over a large area despite the bulb being compact in size. It is fitted into a vivarium or stand by inserting two screws into holes in the top of the reflector. It is IP67 Waterproof.