Review on 💡 Sylvania 20668 Compact Fluorescent 4 Pin Double Tube 4100K, 18-watt: Energy-Efficient Lighting Solution for Any Space by Tammy Formigoni

I am not satisfied with the lifespan of these bulbs. I've bought several over the years and date them as I install them. These lamps are used maybe two or three times in 24 hours, maybe 15 minutes on average, and as far as I can remember they didn't last more than two years. I find the recommended average lifespan to be a lot longer than what I'm getting with them. . I usually wait for both bulbs to burn out and with a difference of about two months both have failed.