thanks for that it will be house leopard geckos.mark67123 said:Assuming you're going to make it out of contiboard - which comes in 8ft lengths where I get it from - you'll need 5 x 8ft lengths of 24" wide, and one 6" wide length to make the plinths.
(That's assuming you're going to have hardboard backs on them - if not then you need 2 lengths of 18" conti.)
You can get six 48"x2" high plinths (the bits the runners fix onto) from an 8ft x 6" length - so just enough to have them top and bottom in each viv.
For heating I'd use ceramics for the bottom 2 vivs and mats for the top two. The heat rising from the two lower vivs would heat the top two to a degree, so mats should be enough just to give them a bit of a boost. They'd be a bit small really for bulbs/ceramics anyway.
What are you planning to keep in them?
EDIT: as markhill said, definitely get everything else built before you measure up for the glass. The measurements will have to be precise otherwise you'll have to mess about replacing/reducing the plinths.