We installed these three "egg ports" about 5 years after building our coop. We got tired of having to climb inside every day for eggs and getting all dusty and sneezy. We used 6" sewer & drain green pvc pipe and some slip on caps we got at Lowe's. The 3' pipe was around $15, and the caps $5 each. If you need a longer pipe you could get a 10 footer but the short pipe fit our needs perfectly. U Bolts were an easy and cheap solution for handles. My husband had to cut through the two layers of the coop with a jigsaw and make sure the circles were level and even from each other so the pipe went straight through. We left the pipe sticking through the inside hole about half an inch, used one screw on the top of the pipe screwed in diagonally into the back of the nest boxes and finished by sealing with outdoor rated caulk on the out side only since the chickens would probably eat it. Viola, easy egg ports in your existing coop!