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===Common specifications===

Wo beneficial early effect of air filter media is 100% synthetic fiber, the average efficiency of 30% to 35%; weight rule of 90% to 93%;

Filter Metal Mesh bonded to the outlet side to prevent vibration, Pleating consistent;

The filter frame made of strong, made of moisture-proof cardboard box. Its normal operating environment will not be deformed, broken, twisted;

Discount from the filters in part by the filter, thereby increasing the filtration area, reducing the resistance of the filter to achieve a longer effect than the tiled filter life.