The dimensions of the air filter are allowed as follows:
* End: longer than 500mm, the deviation is 0, -2mm;
* Depth: Deviation of depth dimension is + 1.6mm, 0;
* Diagonal: the diagonal difference between each end of the filter, when the diagonal is greater than 700mm, the tolerance is less than or equal to 4.5mm; when the diagonal is less than or equal to 700mm, the tolerance is less than or equal to 2.3mm.
* Vertical: the end of the frame and the side should be perpendicular to the deviation should not exceed 3 °;
Flatness: the flatness of the end face and the side plate of the filter should not be more than 1.6mm; the parallelism of the two end faces should be less than or equal to 1.6mm;
* The skewness of the separator: the filter core separator and crease should be perpendicular to the upper and lower end panels of the frame, the deviation should be less than -3mm, +3 mm.
