This was my first major construction project. If I recall correctly the footprint is 4x5 and the front is 3 feet high and the rear is 4 feet high. There is a plexiglas window in the back on hinges that opens to a hardware cloth screen - but I want to replace that with a real window before winter. rnrnTheir run is about 20x10 and it is covered in bird netting. Haven't had an escapee yet!Update: Got our new window in! I love it!!! I can see into the whole coop so easily and the girls can see out.I found the window at re-store for only 3 bucks, and there was also a screen for summertime.