NYLL - (2 Pack 4 FT/ 48” Plug & Play LED Tube - Daylight (6000K) T12 LED Directly Relamp 40W Fluorescent Bulb F40DX, F40T10/D, F40T12/D (Without rewiring or Modification) - Ballast Required! - Amazon.com
Feit Electric 4 ft. 18-Watt T8 32W Equivalent Cool White (4000K) G13 Linear LED Tube Light Bulb Maintenance Pack (10-Pack) T848/841/LED/MP/10 - The Home Depot
48-Inch LED 40 Watt Fluorescent F40 T12 Tube, Medium Bi-Pin Rapid Start Base