coop door, how big?

[rhino1]

I'm trying to finish up my tractor that has a coop in the top. Trying to figure out how big to make the opening at the top of the ramp?

 

[cavemanrich]

The question is::: Will you need access to inside as for cleaning,? Or is it just for chickens to enter ? If it is just for chickens, then an opening 10 inches wide and 14 inches height should accommodate most chicken breeds. If you need access to clean out, maybe you can put in another door in back side, and only use when needed.
Post some pix if you can so that other peeps with other great ideas may give great advice as well.WISHING YOU BEST

 

[rhino1]

Thanks, I posted some pictures of the tractor I am building. The door will be in the floor of the coop that is over the ground in the tractor. I think I ended up making it 10x15. There will be a ramp leading up to it