TBE LIGHTING 28w 2D 4-PIN CFL Energy Saving Lamps - DD Fluorescent Bulbs - 4-Pin GR10q Base Fittings - Long Life Lamp, Soft White 3500K (Single Unit)

This bulb’s built for function—28W compact fluorescent with a 4-pin GR10q base, ideal for bulkhead fittings, utility lights, or van setups. Cool white 3500K output gives clean visibility without harsh glare. Fires up quick with no flicker once warmed, and light spread is even across the flat loop design. Fits standard 2D fittings—just check the 4-pin layout before ordering. Great for replacing old site bulbs, garage lights, or hallway units. Energy saving spec means lower running cost over time, and lifespan’s solid for the price. No hum, no buzz, and no heat build-up. Best used with electronic ballast fittings—not compatible with 2-pin or magnetic setups. 👍 Pros ✅ 28W output—bright and efficient ✅ Cool white 3500K—clean visibility ✅ 4-pin GR10q base—fits standard 2D fittings ✅ Long life—reliable for daily use ✅ No flicker or hum—quiet operation 👎 Cons ❌ Not dimmable—fixed brightness ❌ Needs electronic ballast—won’t work in 2-pin fittings ❌ Fragile loop—handle with care during install

I've ordered these bulbs three times and on each occasion they have lasted at least two years!! I'm not sure why some buyers have had a problem with these - maybe they were dropped before delivery? Anyway, would recommend them. Dead easy to install and a nice bright light.

Easy to install

Was exactly what I needed but electrician couldn't use as he had to replace the whole unit

Good light works well after previous one went

Very poor reiliability. It failed after a year. Considering it replaced a tube that was over 7 years old this is very poor quality.

I always buy these last quite a while too, no flickering at all, very easy to put in

Bought a couple of these for a light we use everyday but they don’t seem to last a great deal? 5 to 6 months at a time. Not the cheapest too!