Just a few thoughts on my pvc enclosure....

I picked mine up at the local Repticon not knowing much about them but knowing that I didn't want to use a tub (visual reasons) or a glass tank (feedback on this site about being high maintenance). I didn't have a BP at the time but knew if I bought the enclosure it would force me to pull the trigger on my 1st snake

I ended up buying a (36 x 12 x 12) but I so wish I would of gotten something deeper then 12 inches because once you put the hides in, space is limited to get in there and do what you need to do; let alone for the snake to explore.

I also ended up putting a UTH on each end because I was having trouble getting the cool side surface temp above 75. If I could do it over again, I would go the RHP route.

As for humidity, mine hovers between 70 -90ish. These enclosures do a great job in keeping it humid.