Guardian Gear Proselect Empire Exercise Pens for Dogs and Pets - Graphite Designed specifically for powerful dogs that work their way out of regular ex pens. Door is raised off the ground to keep dogs from charging out when it is opened Durable graphite hammertone finish adds rust resistance and visual appeal Each supporting rod acts like a ground stake to ensure stability This pen with a door has six 35-3/4"" panels, for a total length of 214.98"" and an area of 21.8 square feet