Incandescent full hoods can be used on most brands of aquariums. They fit on the lip of the aquarium frame for a nice, finished look. The Economy hoods feature a one-piece design with Lexan bulb splash shields for longer bulb life and a feeding window. The Deluxe Incandescent Full Hood is a two-piece design with splash shield and full length feeding door. Each style can has convenient rear breakout sections for proper fit with aquarium accessories. All hoods are the latest design and are U.L. listed. Bulbs are not included.