... 3 )Stop noise better ,give you peace of mind glass windcow /glass window Features: 1) Dimensions: customized2) Material: top grade ... aluminum/pvc/wood profile3) Glass: single-glass:4-12mm; Double-glass:4mm+6A+4mm, common glass/sing tempered/double tempered4mm+9A ... Easily opened, tightly closed, esay operation,spacious feeling, good lighting effect.8) property: Good water-tightness performance, noise ...