(Pack of 6) F28T5/865 28-Watt T5 Fluorescent Tube 6500K Daylight light Bulb, Mini Bi-pin Base PACK OF 6: Contains 6 F285HO 865K Fluorescent light bulbs has a CRI of 85 Bi-Pin (G5) Base F28T5/865K/HO Daylight Color 6500K Fits 4 foot fixture (actual size including prongs 45.5") F28T5/865K/HO 54-watt T5 bulb linear fluorescent bulb Lamps are incredibly powerful, environmentally responsible, long life lamps with an ultra-slim profile For residential and commercial applications that require high color quality, an F28 T5 high-output fluorescent may be what you're looking for High Output applicable for your home office, dinette, kitchen, living room, garage, or any place you need high output fluorescent bulbs