Building new Cage question on Lighting

what I did when I had built my 4x2x2 cages was made the base and then taped th flexwatt down then used that roll on bedliner paint to cover the flexwatt and he wood ( prevent/slows the rotting ofthe wood from wate spills and such) then I just laid my aspen over that I did use a dimmer contol( like from lowes ( but all 3 failed me I guess I was either unlucky or a bad batch.) I since use the ranco /johnson controls and they work great. no close ot cooknig the snakes since). I will forwarn you draw it out and check te measurement befoer you assemble cause ifoff just a little it a pain ot figure it out later . also make sure to count the 2x4 ( or whatever you use for framming) when you cut the dividers out.

Thanks for the help ya'll, I'm sure I'll be asking more questions in the comming weeks. Thanks again.

I've decided to go with the 11" flexwatt but when I did a seach to see how people installed it in their tanks I saw that some people had the flexwatt on the side of the tanks/tubs instead of on the bottom. From what I can see this would still provided the heat however the snake would no be sitting on the flexwatt. Anyone have any views on this?