Flat recessed lights, embedded within ceilings, provide understated illumination without protruding fixtures. These lights typically consist of a housing that holds the light source, a trim that frames the opening and directs light, and a junction box for electrical connections. Various trims, such as baffles, reflectors, and diffusers, enhance aesthetics and control light distribution. Aluminum, steel, plastic, or glass materials offer distinct advantages like durability, heat dissipation, and aesthetics. Flat recessed lights can use incandescent, halogen, fluorescent, or LED sources, each providing different light characteristics and energy efficiency. Proper installation adhering to building codes ensures safety and compliance.