Philips 40-Watt 4 ft. Linear T12 Type A ALTO Fluorescent Tube Light Bulb Bright White (3000K) (2-Pack) 543439 - The Home Depot
Philips 40-Watt 4 ft. ALTO Supreme Linear T12 Fluorescent Tube Light Bulb, Cool White (4100K) (10-Pack) 422675 - The Home Depot
Replacement for National Fl20ss-w/18 588.5mm Not Including Pins Light Bulb by Technical Precision - 20 Watt Fluorescent Bulb - 2ft / 24 Inch Tube Light Bulb - 4100K Linear - 1 Pack - - Amazon.com