What size door?

For a TT with 4' tall sides, what's a reasonable door size? 24x36? 24x32? 30x36?
Or, does it all depend on my backside?
Or, does it all depend on my backside?

or t n ttt for short (tnttt.com)
https://www.tnttt.com/
Shallowatereds wrote:For a TT with 4' tall sides, what's a reasonable door size? 24x36? 24x32? 30x36?
Or, does it all depend on my backside?