This is the housing to use if you want a larger-aperture (six inches) lighting solution for installation in insulated ceilings. (Compare to Halo"s H7ICTNB, which gives you the added convenience of no-socket-plate construction.) The H7ICT also offers a wide variety of trims to choose from so you can customize the unit to match your décor, finish, and desired lighting effects (and, if you wish, make the unit air-tight).Like most of Halo"s recessed lighting fixtures, the H7ICT is designed for ease of installation and flexibility across a variety of materials and situations. The hanger bars include pre-installed nails (self-tapping screws are also available) in special housings that ensure smooth, straight penetration, whether you"re working with laminated composites, engineered I-joists, open-web joist plates, or even frozen lumber. The automatic leveling flanges allow you to hold the housing securely in place with one hand while driving nails with the other. The housing also includes integral T-bar clips for use with suspended ceiling T-grid systems.Halo also makes it easy to work in confined spaces. To install in joist spans of less than 12 inches, simply collapse the hanger bars then bend and break them along the score lines--no tools needed. The bars can also be removed and repositioned on the opposite side of the frame if you need to mount the unit at 90 degrees to the original configuration. Wiring is a breeze with Halo"s patented Slide-N-Side wiring system, which allows wiring outside the junction box.Trims sold separately. UL/cUL listed for damp location, feed through, and direct contact with insulation and combustible material.