Lithonia Lighting Contractor Select GT 2 ft. x 2 ft. Integrated LED 2200 Lumens 4000K Commercial Grade Recessed Troffer 2GTL2 A12 120 LP840 - The Home Depot
TCP 2' x 2' Volumetric Dimmable LED Troffer Light Fixture TRV2UZD3850K, 38W, 5000K, 4,200 Lumens
Metalux 2 ft. x 2 ft. White Integrated LED Flat Panel Troffer Light Fixture at 4200 Lumens, 4000K, Dimmable RT22SP - The Home Depot
50 Watt LED Architectural 2x4 - LED Troffers and Panels | LightMart.com