This extension run is perfect with my coop, the coop would be too small for my needs without this! I love that it has an opening from the top and side. I also modified the latches and did a reversal of how there attached so that it can be moved without anything poking from the extension. This thing is extra light which means I can move it with ease!

Pros: Excellent value, easy to assemble, lightweight, 2 openings