COLORLED 4-Pack T8 Led Light Tube, 4ft, 18W (Equivalent 48W) 2300 Lm, 3500K Warm, Without Ballast Dual-Ended Power Aluminum Frosted Cover Lighting Replacement (Warm White Glow) Easy to stall and save 40% to 80% power energy than traditional fluorescent tube and bulbs Home use comfortable and quiet instant-on 3000-3500K LED fluorescent tube for feeling good International standard high quality qualification for gurantee electric safety Environmentally friendly materials, no radiation, no hazardous, offer high quality lighting source component Ballast bypass not required. Instant on without any delay, switch on so quick and quiet without any noise