hepa filter large air flow,low resistance uniform velocity F6 F7 F8 F9 H10 H11 middle efficiency available

sub-hepa filter

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materials  (depth 22 `100 mm; width 1`1200mm;length at request )

adopting the superfine fiberglass filter paper as the media,water-proof fiber glass can be required! separated by paperboard or aluminum foil,sealed by the new polyurethane sealant.separator:aluminum corrugated  external frame:aluminum metal box or fiberboard frame MDF(or as your requirement)sealant: polyurathaneGasket: EVA

 this sub high mini pleat Filter is to protect the end filtration HEPA filter and longer the operating life !!

medium efficiency mini pleat fiberglass sub-hepa Filter