|1. Characteristics: |
1) Simple lines both outside and inside makes it common but noble
2) The adoption of unequal-distance screw balancer provides more internal and external space when the window is opened and the sash can stop at any position. It makes the ventilation more reasonable.
3) Unique drainage system design can prevent the rainwater and dust from entering caused by wind blowing
4) Imported hardware for vertically-movable window are adopted to make it a smooth, safe and reliable sliding
2. Basic material:
1) Material thickness: 1.4mm
2) Glass: 5 + 9A + 5mm hollow glass
3) Surface treatment: powder coating
4) Fittings: hinge, operator
3. Performance parameter:
1) Sound insulation RW &e;30d B
2) Wind pressure resistance: fifth grade 3,500Pa
3) Air permeation resistance: fifth grade 0.5cbm/m. h
4) Water resistance: Fifth grade 500Pa
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