Australian Standard aluminium double glazed windows folding glass window ventilation bifold window on China WDMA patio door 7-30days after order confirmation

7-30days after order confirmation

3mm Frame Avaible  Lframe

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Australian Standard aluminium double glazed windows folding glass window ventilation bifold window on China WDMA patio door 7-30days after order confirmationCertifications ACOUSTICS TESTED WINDOWS & DOORS Sound or acoustic performance of a window is measured by the weighted sound reduction index or Rw value. Rw values are determined by measuring the reduction in dB achieved where a window is used to insulate against a sound source. The Rw value will increase as the acoustic performance of a window improves, so that a window with an Rw value of 40 has a signi cantly improved acoustic performance over a