TCP Lighting 18W 4-ft LED T8 Tube, Direct Line Voltage, Single-Ended, G13 Base, 1600 lumens, 4000K (TCP Lighting LT818BQ40K) | HomElectrical.com
T8 G13 Bi-pin LED Tube Light 4ft Fluorescent Tube Light 18W 6000K Shop Light LED | eBay
LUXRITE 18W U-Bent LED Tube Light Bulb T8 T12 3000K Soft White Replacement Direct or Ballast Bypass ETL Listed G13 Base (4-Pack) LR23510-4PK - The Home Depot