Thanks for the advice!! No- I did not read the warranty but I am sure it is good. I 'll have to take a look. Hood does have glass and there are vents on both sides of the hood so I can filter/exhaust "out of the room" as much as I like with a Vortex Fan. The dimmable option is neat, but I find it hard to want to reduce my light output. Im wierd that way. There are 3 options on the ballast. 100%, 70% and I think 30%???? dimmable. Guess if heat becomes an issue, I'll kick it down. It's nice cause it gives you another option to modify the environment