Thanks for the response!
I absolutely insulated under the floor, with pink as well as great stuff. One question: Is there any reason I can’t make the keg box 38″ long and adjust the corner frame (make it a tad longer)? Only concern I have is if the fridge (2.7 CF) will cool that big of a box, but the 3 PC fans should help that cause. The reason is the “padded” quarter barrels are 17″ and I plan on putting a double tapper in.
I’m sure I’ll be fine as long as it’s sealed and insulated good and the air is circulating, but I thought I’d ask here as well.