WDMA Noise Reduction Window - China Supplier Custom aluminium frame window glass noise reduction inserts sound proof window patio door the aluminium offers less friction

the aluminium offers less friction when the polyamide roller sildes back and forth

1)  Win Australia standard and USA standard

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WDMA Noise Reduction Window - China Supplier Custom aluminium frame window glass noise reduction inserts sound proof window patio door the aluminium offers less frictionChina Supplier Custom aluminium frame window glass noise reduction inserts sound proof window Product Description Advantage: 1) Simple structure, easy installation, smooth sliding; 2) A perfect blend of the sleek profile, superior weather protection, and style ; 3) Soundproof, heat insulation, corrosion proof; 4) Available in any sizes you need, flexibility to choose between 2, 3, 4 or even 6 panels; 5) Uninterrupted views without compromising