A 3" aperture specification grade adjustable housing platform that accepts 100W maximum line voltage tungsten-halogen lamps. Suitable for 2x8 residential framing or commercial installation. The platform is airtight to prevent energy loss, room drafts, dust marks on ceilings and reduce sound transmission. Insulation must be kept 3" away from top and sides of the housing. A complete fixture requires two components; a PN3120 housing platform and a 3" optical element. Elements may be changed after installation to provide a variety of distributions. Specifications Manufacturer Cooper SKU PN3120 General Applications Area Lighting Finish Black, White Dimmability Dimmable All trim types are available including baffle, alzac, wall wash, adjustable "eyeball", wet location and airtight rated trims. Call 1-800-480-0707 or email firstname.lastname@example.org to choose popular trim colors including bronze, metallic, white, black or custom color options.