SPECIFICATION FOR DISPOSABLE SECONDARY POCKET FILTERS
Air filters shall be the POCKETPAK extended surface pocket filter type.
The filter media shall be lofted 100% spunbond polypropolene layed on a polypropolene carrier to prevent fibre migration.
The individual pockets manufactured from the above shall be fully sonically welded on all edges and along inflation control lines then joined together by same process.
The efficiency of the media shall be 40 – 45% ASHRAE / EU5
60 – 65% ASHRAE / EU 6
80 – 85% ASHRAE / EU 7
90 – 95% ASHRAE / EU 8
The support grid shall be manufactured from 4mm diameter galvanized steel spot welded together.
The joined pocket assembly shall be glued to the periphery of the support grid.
The enclosing frame shall be the PAK FRAME modular type, the components manufactured from corrosion resistant steel with a minimum thickness of 0,5mm.
The PAK FRAME sides shall have returned edges of at least 10mm for extra strength and safety when handled.
The PAK FRAME 90 corner pieces shall guarantee during manufacture that the finished filters are always square.
The inside periphery of the enclosing frame shall be permanently bonded to the media pack with expanded urethane thus eliminating the possibility of air bypass.
A permanent identification and airflow direction label shall be affixed to the filter frame.
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