What reptile for a 4'8" L x 18" W x 3.5' H

[Sauzo]

Thanks for answering, I'll look into the dwarf retic. Also, if there was some way I could change to width to maybe two feet, what would fit in there?

Super dwarf, not dwarf. A dwarf can still get to 13'+. Super dwarf tend to stay smaller but can still have potential. My 37.5% SD male is 7' and hes 14 months old. But he does like to eat A LOT.

Two feet more in width and you can get pretty much anything. The determining factor is how big they get as an adult. You just have to research what you like and then go from there.

The general rule of thumb is cage length+width=total length of the snake. Now a lot of people fudge some which is fine but what i mentioned is the general rule.