bluemerle
Songster
I would make a solid door for it. Even with a solid door it has nice ventilation up high that they can sleep below. Also pay attention to your prevailing wind direction and position it so the wind is blowing against the most solid side and not right in the door during the day when the door is open for them.
I have had a kennel like this. At some point past our puppy stage of making mischief in the house the kennel got moved outdoors as a shelter/dog house for the pups. I just caution you to be gentile with it in freezing conditions, between the cold and the UV the plastic on mine got brittle and I accidentally cracked it when I was cleaning snow/ice off the top.
Thank you!!! I will cover up the door & probably add a wind break to the front of their run so they're protected from wind at all sides.