LED Troffer Transformer, Lumens 3,390 lm, Lumens Range 2,000 to 3,999 lm, Light Technology LED, 120-277V AC, Lighting Certification DLC Premium, Dimmable Yes, Emergency Battery Backup No, For Bulb Type LED, Overall Height 1 31/50 in, Overall Length 47 3/4 in, Overall Width 23 3/4 in, Color Rendering Index 85, Color Temperature 3500K, 4000K, 5000K, Dimming Method 0-10V, Lamp Quantity Not Applicable, Lens Type HD PC, Lumens per Watt 130 lm/W, Max. Ambient Temp. 140 Degrees F