-- Halo's recessed lighting fixtures are 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 hangers of the H99T fit onto the T-bar spline of a suspended ceiling system, and may be permanently secured with optional TB7 T-bar clips.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.The H99T, with its small, four-inch aperture, is the perfect solution for discreet accent or task lighting, and is available with a variety of trim styles (sold separately). Note that, while this is not an IC-rated fixture, insulation may be placed around it as long as a three-inch space is maintained around the housing. UL damp location and feed-through rated; CSA certified; IP rated. (Looking for a similar lamp for a remodel project? See Halo's H99RT.)--Josh DettweilerWhat's in the BoxFour-inch-aperture housing Product Description Air-tite fixture sealed and gasketed to prevent airflow between attic space and living areas. Can be installed from below the ceiling. For providing accent and task lighting where insulation can be kept 3" from housing. Thermal protector deactivates fixture if overheating occurs due to improper lamping or misapplied insulation. Junction box is listed for through branch circuit wiring and has seven 1/2" knockouts and four pryouts with integral strain relief for non-metallic sheathed cable. Four remodel clips secure housing and accommodate ceiling thickness of 1/2" and 5/8". UL/cUL Listed 1598 Luminaire. UL/cUL Damp Location Listed. UL/cUL Listed for Wet Location, covered ceiling - with select trims. Certified Under ASTM-E283 for air tight construction.Amazon.comHalo's recessed lighting fixtures are 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 hangers of the H99T fit onto the T-bar spline of a suspended ceiling system, and may be permanently secured with optional TB7 T-bar clips.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.The H99T, with its small, four-inch aperture, is the perfect solution for discreet accent or task lighting, and is available with a variety of trim styles (sold separately). Note that, while this is not an IC-rated fixture, insulation may be placed around it as long as a three-inch space is maintained around the housing. UL damp location and feed-through rated; CSA certified; IP rated. (Lo