Easy access door offers one hand operation and dual lock for safety;Comes with six removable and adjustable panels; encloses up to 18.5 square feet and is 26 high;Optional two panel extension available and will increase the size from 18.5 square feet to 34 square feet;Works on any surface both indoors and outside; will not scratch;No assembly just click panels into place;Optional two panel extension available and will increase the size from 18.5 square feet to 34 square feet; maximum of 8 total panels can be used