GE T8 4-Bulb Residential Fluorescent Light Ballast in the Ballasts department at Lowes.com
Alpha T8 T10 T12 LED Light Bulbs Clear or Frosted Lens 4FT 18W 6000K-6500K Cool White Bright Dual End Replacement 40W 4 FT Fluorescent Lamp Ballast Bypass Home Office Shop Pack of
SHINESTAR 24-Pack T8 LED Bulbs 4FT, 18W 2200LM 5000K Daylight, T10 T12 Fluorescent Light Replacement, Ballast Bypass Type B, Dual-end, Clear Cover, 2 pin G13 Base - Amazon.com