40 Pk) F54W/T5/865/ECO - 54W T5 Bulbs High Output 6500K 800 Series - GE 46763 - - Amazon.com
Simply Conserve T5 linear 54-Watt EQ 46-in Daylight Miniature Bi-pin (t5) Linear Type A LED Tube Light Bulb (25-Pack) in the LED Tube Light Bulbs department at Lowes.com
25 4' T5 GROW BULBS CASE FLUORESCENT F54T5HO LAMPS 6500K blue 54 watt tubes | eBay
Satco Lighting S6445 Frosted Single 54 Watt 48" Wide T5 Bi Pin Fluorescent Bulb - 1,400 Lumens and 6500K - LightingDirect.com
Philips 28-Watt 46 in. Linear T5 ALTO Fluorescent Tube Light Bulb Bright White (3000K) (30-Pack) 429175 - The Home Depot