Feature: MADE OF HIGH QUALITY MATERIALS: a rigid frame will not allow the panel to bend over time, the lens is made of Special PMMA (transparent glass substitute) and will not yellow over time. Even in five years the fixture will look exactly the same as the day it was installed. This Edge lit panel measures only 1/2â?? thick making it one of the slimmest panels in the marketplace today. ETL LISTED AND DLC CERTIFIED. DLC certification makes the product eligible for energy saving rebates WIDE APPLICATION: LED troffer panel lights can be used in just about any indoor space. Use them in schools, offices, retail spaces, hospitals, and many other places. They are aesthetically pleasing while still providing ample amounts of lighting. These LED troffers come in 1X4 2X2 and 2X4 sizes perfect for any space EASY TO INSTALL; RECESSED AND SURFACE MOUNTED OPTIONS ARE AVAILABLE: Standard application is T-Grid, all accessories are included. Two alternative mounting options are available: surface and sheetrock flush mount. PLEASE NOTE: accessories for all mounting options excluding T-Grid recessed mounting should be bought separately DIMMABLE LED PANEL LIGHTS: These LED panels are dimmable. They have the standard 0â??10V dimming capabilities. High quality driver provides smooth 5-100% dimming (opposed to step dimming suggested for lower quality drivers that allows only a few dimming options (e.g. 25%-50%-75%-100%). Please note: dimming is optional, if this feature is not required the dimming wires can simply be capped off and the light will function on/off WARRANTY AND TECHNICAL SPECIFICATIONS: 81,000 hour LED lifetime, 5-year manufacturerâ??s warranty, 3000K / 4000K / 5000K color temperature , 4677 lm luminous output (the amount of light produced), 40W (efficiency), 100-277V operational voltage range. Additional technical specs can be found in the table below