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Filter Cell Reference

Flow vs. velocity vs. clean / mean / max ΔP table for every filter cell. The built-in entries are seeded from the supplier Pressure drop values master sheet (Washable G4, Disposable G4, Bag F7, Rigid F8, HEPA H10, Carbon V-bank). Any rows added in Settings → Filter Specifications appear here automatically. Face-velocity ceiling is 2.8 m/s (red); below ~1.5 m/s the cell underuses the face area (yellow). Mean ΔP = clean + 150 %; Max ΔP = clean + 250 % — used for fan sizing reserve and replacement thresholds.

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Washable G4 — 592 × 592 × 48

Rated 2000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s981 L/s  ·  2079 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)170 Pa
Max ΔP (clean + 250%)238 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%982080.30
20%1964160.60
30%2946240.80
40%3938321.10
50%49110401.40
60%58912481.70
70%68714552.00
80%78516632.20
90%88318712.50
100%98120792.80

Washable G4 — 592 × 287 × 48

Rated 1000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 287 mm
Face area0.1699 m²
Max flow @ 2.8 m/s476 L/s  ·  1008 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)170 Pa
Max ΔP (clean + 250%)238 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%481010.30
20%952020.60
30%1433020.80
40%1904031.10
50%2385041.40
60%2856051.70
70%3337062.00
80%3818062.20
90%4289072.50
100%47610082.80

Disposable G4 — 592 × 592 × 44

Rated 2000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s981 L/s  ·  2079 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)243 Pa
Max ΔP (clean + 250%)340 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%982080.30
20%1964160.60
30%2946240.80
40%3938321.10
50%49110401.40
60%58912481.70
70%68714552.00
80%78516632.20
90%88318712.50
100%98120792.80

Disposable G4 — 287 × 592 × 44

Rated 1000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s476 L/s  ·  1008 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)243 Pa
Max ΔP (clean + 250%)340 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%481010.30
20%952020.60
30%1433020.80
40%1904031.10
50%2385041.40
60%2856051.70
70%3337062.00
80%3818062.20
90%4289072.50
100%47610082.80

Bag F7 — 592 × 592 × 534 (8P)

Rated 2000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s981 L/s  ·  2079 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)303 Pa
Max ΔP (clean + 250%)424 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%982080.30
20%1964160.60
30%2946240.80
40%3938321.10
50%49110401.40
60%58912481.70
70%68714552.00
80%78516632.20
90%88318712.50
100%98120792.80

Bag F7 — 287 × 592 × 534 (4P)

Rated 1000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s476 L/s  ·  1008 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)303 Pa
Max ΔP (clean + 250%)424 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%481010.30
20%952020.60
30%1433020.80
40%1904031.10
50%2385041.40
60%2856051.70
70%3337062.00
80%3818062.20
90%4289072.50
100%47610082.80

Rigid F8 — 592 × 592 × 292

Rated 2000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s981 L/s  ·  2079 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)465 Pa
Max ΔP (clean + 250%)651 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%982080.30
20%1964160.60
30%2946240.80
40%3938321.10
50%49110401.40
60%58912481.70
70%68714552.00
80%78516632.20
90%88318712.50
100%98120792.80

Rigid F8 — 287 × 592 × 292

Rated 1000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s476 L/s  ·  1008 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)465 Pa
Max ΔP (clean + 250%)651 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%481010.30
20%952020.60
30%1433020.80
40%1904031.10
50%2385041.40
60%2856051.70
70%3337062.00
80%3818062.20
90%4289072.50
100%47610082.80

HEPA H10 — 592 × 592 × 292

Rated 2000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s981 L/s  ·  2079 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)625 Pa
Max ΔP (clean + 250%)875 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%982080.30
20%1964160.60
30%2946240.80
40%3938321.10
50%49110401.40
60%58912481.70
70%68714552.00
80%78516632.20
90%88318712.50
100%98120792.80

HEPA H10 — 287 × 592 × 292

Rated 1000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s476 L/s  ·  1008 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)625 Pa
Max ΔP (clean + 250%)875 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%481010.30
20%952020.60
30%1433020.80
40%1904031.10
50%2385041.40
60%2856051.70
70%3337062.00
80%3818062.20
90%4289072.50
100%47610082.80

Carbon V-bank — 592 × 592 × 292

Rated 2000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s981 L/s  ·  2079 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)278 Pa
Max ΔP (clean + 250%)389 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%982080.30
20%1964160.60
30%2946240.80
40%3938321.10
50%49110401.40
60%58912481.70
70%68714552.00
80%78516632.20
90%88318712.50
100%98120792.80

Carbon V-bank — 592 × 287 × 292

Rated 1000 CFM @ 2.5 m/s · max 2.8 m/s
Width × Height592 × 287 mm
Face area0.1699 m²
Max flow @ 2.8 m/s476 L/s  ·  1008 CFM
Clean ΔP Pa
Mean ΔP (clean + 150%)278 Pa
Max ΔP (clean + 250%)389 Pa
% of maxFlow (L/s)Flow (CFM)Velocity (m/s)ΔP (Pa)
10%481010.30
20%952020.60
30%1433020.80
40%1904031.10
50%2385041.40
60%2856051.70
70%3337062.00
80%3818062.20
90%4289072.50
100%47610082.80

How this is used in selection

The AHU sizing endpoint at /api/ahu/sizing/recommend uses the same face area to size filter banks: it counts how many cells fit the unit's filter face (W × H) and checks that the total capacity covers the per-unit airflow at or below 2.8 m/s. Big cells stack from the bottom up; if vertical space is left over it adds a row of half cells on top.