Filter in galvanized sheet housing, provided with collars for mounting in   ducted installation. It is used in ventilation installations as the initial grade of dust extraction.
The filtering cassette in the form of pocket-like filter type FW-3 per PN EN 779 consists of  a frame 25mm thick made of galvanized steel sheet. The pocket is made of synthetic needled cloth suspended on the frame.

The filter may be installed in any position but pocket  planes should always be  positioned vertically.
There should also be ensured an appropriate spacing, specified by C dimension, allowing for filter cassette replacement.

There is a covered  inspection hole used for filter installation positioned at the bottom of the filter. Filter cassette should be replaced when the value of 250 Pa is exceeded. The filter cassettes may be regenerated.

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