The reflectors are the spiderlight version from PFO VHOs attach to them also.
Those boxes are designed for holding bigger and hotter ballast.( Hydroponic stuff} I havent really run them long enough to see how hot they will get. If they get too hot I will go that route. Glad you like it.
I'm thinking with thoes two transformers Hot!
The boxes look like they are made for that kind of heat though. I'd look into where you plan on putting it first, depending on location you may/may not need a fan. The only way you will find out is run them.
Dont forget to add computer fans inside or outside if you dont have space. Those will get hot... In my case, i cannot touch the housing after several hours of use...