Air Filtration Products: HHE/DCAF-G4+F7
The fine-filter version of the Duet: G4 media takes the coarse load while the F7 layer behind it captures at 3-micron fine grade, a complete pre-plus-fine train in one frame. For AHUs whose housings cannot take a second stage, it delivers staged filtration that a single-grade panel cannot.
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Two stages in one frame: a Duet G4 pre layer bonded ahead of an M6 medium layer, one filter, a complete coarse-to-medium train.
The Duet G4 + F7 bag: a pocket-format combination filter with coarse pre media and fine bag pockets.
Gas-tight HEPA terminal housings: the ceiling and duct-end boxes that turn a HEPA filter into a validated terminal.
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