Preferred AP for carpet?

[Terminal]

For an adult Coastal I'd go with an AP T12 (4x2x2) or an A20 (4x2x3). I've decided to put mine in A20s when they get older. I like the sliding glass doors on the T12 but I like the extra vertical space with the A20. I'll have AP install the red led strips and will have Reptile Basics ship the 120w RHPs for AP to install as well. Hopefully I can use the RHPs exclusively and won't need a UTH.

So if I go with the T12 I could house shag in it pretty soon using a
the divider, right?