ECOCH101-P Coop sold separately Features: -Pen extension for ECOCH101 (1 segment).-Made using eco Flex, a composite of recycled polymers and wood by product.-Allproof and extremely resistant to problems caused by normal climate conditions.-Steel mesh in pen is 18 gauge galvanized steel.-Perfect addition for your urban chicken coop in your backyard, patio, rooftop and more. Dimensions: -Dimensions: 23" H x 23.6" W x 31.5" D.