Looks like most companies I'm looking at don't make one totally clear all the way around.

*Advanced DIY* Non-Bakearound 7" Cooltube - Grasscity.com Forums

There's a technique DIY on makign your own.
khyberkitsune Reviewed by khyberkitsune on . Indoor Grow Box Set-up Here is a quick layout on my ideal grow box. Im going to build a custom cabinet type grow box. As you can see in the photo its 3'x3'x7' and I plan to use a 4" exhaust inline duct fan with a carbon scrubber, im not sure what size intake vent hole yet, 400w HPS lighting, 2 CFL side lights, and a circulating fan for strengthing stems and in case I need to cool down the temp a bit. Any ideas on what I should add or change? Any suggestions on how many plants I can fit easily? Rating: 5