Patent ID: 6896391

Claim:
An apparatus for lighting that attaches to a building structure comprising: a main profile having a first side and an opposing second side, the profile mounting to the building structure; a transformer disposed in proximity to the main profile for providing electricity; a terminal connected to and disposed in the main profile and connected to the transformer; and a cassette having light elements which is interchangeable with the terminal, the cassette removably held by the main profile and in contact with the terminal, and receiving electricity from the transformer through the terminal, the cassette changeable as a function of use and providing interchangeability of light elements, the light elements are low voltage, line voltage, LED or metal halide lamps, or any combination thereof, the cassette has a snap mechanism which snaps into place with the main profile to hold the cassette with the main profile, the snap mechanism has a plurality of snaps which snap into place with the main profile, each snap has tabs that are moved to release the cassette from the main profile.