Comes with protective gaskets which can scratches or damage to window and provide enough frictions between the and the track The sliding window can reduce the risk of children and petsfalling from height by limiting window opening distance Suitable for family, hotel, schools, kindergartens Easy to installation: there is none need to installation tool, it equip a in each window, holding on the track by control Make of Aluminum Alloy, exquisites workmanship, rusts resistance, durability, Manufacturer: Kaeltsyn