... , 6, 4.Thikness:2.5MM Plastic sliding windows/doors ; excellent quality;energy efficient&safety; acoustical insulation. 1. PVC profiles: 1>Brand: LG,Conch ... , 6mm, 8mm; Space: 6, 9, 12, 16mm.4. Reinforcement: galvanized steel; thickness: 1.2mm, 1.5mm, 2.0mm, 2.5mm.5 ... . Place of origin: Guangzhou City, GuangDong Province, China. European style pvc sliding window