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Flanders manufactures both conventional
Separator Style and Pureform Separatorless
HEPA Filters. To make a Separator Style filter,
the media is folded over corrugated aluminum
separators with hemmed edges to separate the
pleats in the filter pack. Flanders manufactures
its own filter media, enabling it to develop a
unique manufacturing process for the produc-
tion of Pureform Separatorless HEPA Filters. In
one manufacturing operation, Flanders pro-
duces a self-supporting and self-separating
Pureform Media Pack. The Pureform Filter
offers many advantages over conventional
Separator Style HEPA Filters:
• More usable media area for longer service
life because of higher dust holding capacity
• Reduced cost of ownership because of
longer service life
• Maximum utilization of the media
• Can handle some harsh environments
which may attack aluminum separators
• Media pack can be incinerated
• Media is 28 mils thick, which is significantly
thicker than conventional 15 mil media
used in Separator Style HEPA Filters
CFM Dimensions and Capacities
Alpha Cell HEPA Filter Dimensions and Capacities
CG-F 24x24 650 1000 1300 38
GC-F 24x12 300 455 590 26
11-1/2 YY-F 23-3/8 x 23-3/8 615 945 1235 37
YU-F 23-3/8 x 11-3/8 275 425 550 25
GN-F 24x30 830 1275 1655 45
CC-F 12x12 135 205 265 14
GG-D 24x24 325 500 650 20
GC-D 24x12 145 225 295 12
BB-D 8x8 25 35 45 6
CC-D 12x12 70 105 135 9
YY-D 23-3/8 x 23-3/8 305 470 610 18
YU-D 23-3/8x11-3/8 270 415 540 23
GN-D 24x30 410 635 825 26
5-7/8 GP-D 24x36 505 775 1010 33
GQ-D 24x48 680 1045 1360 39
GR-D 24x60 860 1320 1715 32
GS-D 24x72 1035 1590 2065 46
NN-D 30x30 525 810 1055 26
NP-D 30x36 640 985 1280 30
NQ-D 30x48 865 1330 1730 37
NR-D 30x60 1090 1680 2185 44
NS-D 30x72 1315 2025 2630 52
PP-D 36x36 790 1215 1580 33
PQ-D 36x48 1050 1620 2105 41
PR-D 36x60 1315 2025 2630 49
PS-D 36x72 1580 2430 3160 59
Frame Depth Filter Size and Actual Face CFM Capacity at Clean Weight
(Inches) Frame Depth Size (inches) Pressure Drop, inches w.g. (LB.)
Designator .65 1.0 1.35
Alpha Cell with
Separator Style
Media Pack
Alpha Cell with
Pureform Media Pack
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