Westpointe, F34/CW/C/TV/UPC, 1-1/2" x 48", 34W, Cool White, T12, Fluorescent Tube, Energy Efficient, 4,100 Kelvin Color Temperature, Medium Bi-Pin Base, 1,700 Initial Lumens, 15,000 Hours, CRI=87, Designed For Commercial/Industrial Or Better Grade Hard Wired Residential Fluorescent Fixtures With Circle E, .9 Power Factor Ballasts.