Ciata Lighting 1x4 LED Ultra Thin Super Bright Flat Panel with Build in Driver 40 Watt 4000K White Frame (1x4 - 1 Pack) 1X4 led flat panel fixture provides a modern alternative to the traditional 1x4 fluorescent troffer, reaching up to 105 lumens per watt. Environmentally friendly-mercury free It is available in 0-10v dimming or step dimming with 5 years warranty. The FP led flat panel lights are ideal for replacing existing fluorescent luminaires. they are perfect for flush ceiling lighting, suspended lighting, drop-ceiling lighting,such as corporate offices, manufacturing facilities, architectural settings, hotels and hospitals. ETL & DLC Listed, LM79 Report, Suitable for Damp Location.