Progress Lighting P7230-15EB White Acrylic Diffuser with Metal End Caps 120/277 Volt High Power Factor Electronic Ballast, Polished Chrome Polished Chrome Finish White acrylic Size: 5-1/4-Inch Width, 24-1/2-Inch Height Extends 3-1/4-Inch Uses (2) 17-Watt F17T8 bulbs Progress Lighting has over 5,000 lighting fixtures offered in our catalog, the largest single source for residential and commercial lighting