Sunlite 05023 40 Watt T9 Circline 4-Pin Base Warm White Outdoor Commercial HALOGEN BULB INCLUDED - 500-watt

HALOGEN BULB INCLUDED - 500-watt halogen bulb is included (Q500/T3)

Heavy-duty glass facilitates safety and helps protect bulb Integrity with metallic chassis

Emergency Backup Ballast

DIMMABLE & MERCURY FREE - These incandescent bulbs are fully dimmable so you can adjust the output and they are free of mercury and other harmful chemicals

This thermoplastic

Sunlite 05023 40 Watt T9 Circline 4-Pin Base Warm White Outdoor Commercial HALOGEN BULB INCLUDED - 500-wattSunlite fluorescent lamps are very popular for use in office and other lighting applications. The characteristics of fluorescent lamps vary type of lamp. Fluorescents lamps are used so widely due to their low operating costs and because they are efficient, last for years, and are high quality and rapid starting. Fluorescent lamps can cost significantly less to operate over their lifetime than incandescent lamps. Life ratings for fluorescent lamps