Main feature:

1、 Fully ensure noisedamping: With unique z-type sectional structure, initializing channel for the wind, can absorb noise and dust, also has the function of anti-mosquito and anti-theft, meanwhile realize noisedamping and ventilating function.

2、 Have remarkable effects on heat insulation and winter proofing: Can inherent regulate the ventilation rate; even can close the panel both in and out at the same time. Thus make the heat insulation and winter proofing function remarkable, which not form frost in icy area while reject moisture in pole areas.

3、 Easy to clean: Interior panel can be opened easily with sound-absorbing lumen, convenient for periodic cleaning to dust abatement net.

4、Prevent midge, theft and rain, then you can enjoy a happy life.