2x4 30/35/40 Watt LED Retrofit Kit Controls Ready Center Basket Troffer Emergency Battery Backup 3500K/4000K/5000KHalco's Center Basket Troffer is a family of sleek, modern LED troffers and retrofit kits designed for new construction, remodel and retrofit recessed ceiling applications. The frosted acrylic center basket design can fully illuminate the floor and walls of a room while still minimizing fixture glare. Removeable end caps conceal a 3. 5mm receptacle mounting location for integrated sensor fixture control at one end and an optional emergency battery