Nice! What holds them open?Sounds like a good system @little fuzzy.
Put a rear window in the coop today. Has glass to close for when it's cold in winter and a grill for all other times. Opens all the way for when I want to reach in for something. Pleased with how the back of the cooo has turned out.
Next thing to add is a raised box in the run full of soil and charcoal for the hens to jump up to and have a dust bath.