The Cottageview Expansion Panels are designed to expand the dimensions of the Cottageview 5x5x4 Dog Kennel. The panels are made from the same heavy duty wleded wire mesh as the cottageview dog kennel. Multiple expansion kits can be purchased to create different types of dog runs. The panels cam also be used as a partiton in certain areas of homes, garages, decks etc. The welded wire mesh is approx. 2"x4"