UV Glass

[BigH55]

do you need to use the glass for double ended MH bulbs?

 

[DEERE G]

I am pretty sure you do.

 

[Gallandro]

I'm pretty sure you dont. The box and paperwork says the outer glass stube filters UV. My bulbs are Osram and Interpet

 

[BigH55]

Double ended bulbs are not a tube and fit in like a halo bulb.