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