Lithonia LED Low Profile 34 Watt 1x4 Troffer, 4062 Lumens- 4000K | Green Lighting Wholesale
EATON Lighting 2GR8432 2' x 4' Metalux 4 Lamp Fluorescent Recessed Troffer - Close To Ceiling Light Fixtures - Amazon.com
High Efficacy 2X4 LED Retrofit Kit for Fluorescent Troffers in Daylight 5000 Kelvin Daylight - Out of Stock. Please refer to Model AXTROFFER - 2 X 4 KIT-50 with PS72HS24 Power Supply.