WDMA Noise Reduction Window - Aluminium Solar Awning Window with Noise Reduction Type:Awning Windows proving excellent heat insulation and

proving excellent heat insulation and airtightness

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which continually won the title "Recommended Products "of "Wuxi Consumer Association " for 5 years

above is only sample

WDMA Noise Reduction Window - Aluminium Solar Awning Window with Noise Reduction Type:Awning Windows proving excellent heat insulation andCertifications Tested & Certified Alufront's windows and doors have been tested according to US and Australian standard, for thermal rating and Acoustic are above the international standard. Alufront's products are approved by AAMA,CSA,WERS,NFRC standard. 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