Add a 3.5ft Run Extension to your 6.5ft Run. Designed to fit securely to your Nestera 6.5ft Run on a Large Penthouse Coop, the 3.5ft Run Extension gives your chickens additional outdoor space of up to 10ft. Secure Chickens = Happy Chickens Our runs offer your flock complete safety from predators. Manufactured with ‘anti-chew' solid steel weld mesh with a durable PPA coating, our chicken coop runs include a wide mesh skirt around the entire perimeter, making tunnelling nearly impossible. Each run is painted black to blend into its surroundings. Easy Access for You and Your Flock Your chickens can come and go as they please with up to three separate openings provided on each run. A large lockable door is built into the steel mesh on the end panel, with hatches to the left and right under the rear of the raised coops which can be securely locked with their solid recycled plastic handle. Dimensions Height: 37.6"Width: 37.4"Length: 45.3"