Product review (1 stars): Very disappointed. Do not buy this even though it is ...
Arrived quickly but bulb turned out to be 5/8" too short for the glass tube so therefore the build would fall down and not connect to the ballast.  The second problem is that the rubber grommet that seals the unit to the lid is too wide by mm's so it will not fit.  Very disappointed.  Do not buy this even though it is way cheaper than the original Danner light bulb.