Cat Run, Metal Cat Enclosures Framed and Netted cat enclosure in Crawley. 13 Aug The owners picked this perfect area for their new kittens to enjoy the outdoors. The enclosure measures 3.5m x 2.2m x 2.3m and has a hinged door for easy access. Large size freestanding enclosure in Beeliar. Galvanised mesh enclosure in Darlington.