Review on 💡 High-Efficiency F4T5 Fluorescent Tube with Low Mercury Content by Ashley Belehar

This brings a happy ending to a long search. Exact Measurements: 5 1/4" end to end and 6" tip to tip (overall). This replaces an old tube from a twin lamp that is probably over 40 years old. old, it has no trademark or other markings. The bad tube was marked "Parly FL-4D". Local shops only had cool white bulbs, which are disappointingly dimmer; I discovered this the hard way and had to return one. My flashlight uses three "C-cells". This package is marked "F4T5/D"; The only clue as to where exactly it was made is the name "EIKO" which I believe is a Japanese name. HIGHLY RECOMMENDED!