Mass Loaded Vinyl (MLV) is a versatile and effective soundproofing material for windows, made from PVC and vinyl using a significant substance such as barium sulphate or calcium carbonate. The cost of soundproof curtains or blinds can differ according to their dimensions, materials, and model. Charges normally range between $30 https://monkey-art-by-banksy68654.pages10.com/about-acoustic-insulation-for-sash-windows-62509674