New construction housing for use in insulated ceilings can be in direct contact with insulation. Air-tight construction provides energy savings by reducing the flow of air through the ceiling. Patented design allows for easy, tool-less removal of the driver. Input Voltage: 120-277V Wattage: 10W Dimming: Phase (Triac or ELV) or 0-10V Ceiling Thickness: Up to 0.5in. Extension collar accessory for ceilings up to 2", ordered separately (NIO-1EXTC2) Compatible Trims: NIO-1RNB, NIO-1RNG, NIO-1SNB, NIO-1SNG, NIOB-1RNB, NIOB-1RNG, NIOB-1RPH, NIOB-1RSL, NIOB-1SNB, NIOB-1SNG, NIOP-1RCY, NIOP-1RTC Listing: cULus Listed for Damp Locations (Wet locations when used with compatible trim)