VentLiner is a highly resilient blanket type of thermal, acoustical and fire safety glass mineral wool made from more 80% of recycled glass. It is designed to meet specific requirements in the HVAC equipment industry especially for the internal duct lining and other OEM applications. The glass mineral wool insulation also enhances indoor by absorbing noise within sheet metal ducts and contributes to thermal comfort by reducing heat loss or gain through duct walls.
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in section "Cotton wool mineral"