Euroquatics E5 lamps are direct replacements for T5HO lamps. They last up to 8 years vs the 6-9 months a T5 lasts. They use 45% less power and have superior life span and spectral quality and all E5 lamps come with a 3 year limited warranty. E5 lamps can also be use with T5HO lamps in most fixtures.
Also, E5 lamps are dimmable.*
Replace your T5HO lamps one at a time or all at once and you can start saving on your power bill today!

*From time to time fixtures manufactures change their ballasts and some ballast may have trouble dimming the E5 lamps.