The Halo H99RTAT-6PK is a 6-pack of 4-inch small aperture recessed housings designed for remodel applications in non-insulated ceilings. These professional-grade steel housings feature an Air-Tite design to prevent airflow between living spaces and unconditioned areas, improving energy efficiency. Each unit is Non-IC rated, requiring a 3-inch clearance from insulation. Key features include a built-in thermal protector for overheat safety, Quick Connect wiring connectors for tool-less installation, and remodel springs that accommodate ceiling thicknesses from 1/2-inch to 5/8-inch. The compact 5.5-inch height is ideal for use in 2x6 joist construction and is compatible with a wide variety of 4-inch incandescent or LED retrofit trims. Note: This item is a multi-piece set and may be missing components or otherwise incomplete