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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 2500 CFM @ 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s1180 L/s  ·  2500 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%1182500.30
20%2365000.60
30%3547500.80
40%47210001.10
50%59012501.40
60%70815001.70
70%82617502.00
80%94420002.20
90%106222502.50
100%118025002.80

Washable G4 — 592 × 287 × 48

Rated 1250 CFM @ 2.8 m/s
Width × Height592 × 287 mm
Face area0.1699 m²
Max flow @ 2.8 m/s590 L/s  ·  1250 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%591250.30
20%1182500.60
30%1773750.80
40%2365001.10
50%2956251.40
60%3547501.70
70%4138752.00
80%47210002.20
90%53111252.50
100%59012502.80

Disposable G4 — 592 × 592 × 44

Rated 2500 CFM @ 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s1180 L/s  ·  2500 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%1182500.30
20%2365000.60
30%3547500.80
40%47210001.10
50%59012501.40
60%70815001.70
70%82617502.00
80%94420002.20
90%106222502.50
100%118025002.80

Disposable G4 — 287 × 592 × 44

Rated 1250 CFM @ 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s590 L/s  ·  1250 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%591250.30
20%1182500.60
30%1773750.80
40%2365001.10
50%2956251.40
60%3547501.70
70%4138752.00
80%47210002.20
90%53111252.50
100%59012502.80

Bag F7 — 592 × 592 × 534 (8P)

Rated 2500 CFM @ 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s1180 L/s  ·  2500 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%1182500.30
20%2365000.60
30%3547500.80
40%47210001.10
50%59012501.40
60%70815001.70
70%82617502.00
80%94420002.20
90%106222502.50
100%118025002.80

Bag F7 — 287 × 592 × 534 (4P)

Rated 1250 CFM @ 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s590 L/s  ·  1250 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%591250.30
20%1182500.60
30%1773750.80
40%2365001.10
50%2956251.40
60%3547501.70
70%4138752.00
80%47210002.20
90%53111252.50
100%59012502.80

Rigid F8 — 592 × 592 × 292

Rated 2500 CFM @ 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s1180 L/s  ·  2500 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%1182500.30
20%2365000.60
30%3547500.80
40%47210001.10
50%59012501.40
60%70815001.70
70%82617502.00
80%94420002.20
90%106222502.50
100%118025002.80

Rigid F8 — 287 × 592 × 292

Rated 1250 CFM @ 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s590 L/s  ·  1250 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%591250.30
20%1182500.60
30%1773750.80
40%2365001.10
50%2956251.40
60%3547501.70
70%4138752.00
80%47210002.20
90%53111252.50
100%59012502.80

HEPA H10 — 592 × 592 × 292

Rated 2500 CFM @ 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s1180 L/s  ·  2500 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%1182500.30
20%2365000.60
30%3547500.80
40%47210001.10
50%59012501.40
60%70815001.70
70%82617502.00
80%94420002.20
90%106222502.50
100%118025002.80

HEPA H10 — 287 × 592 × 292

Rated 1250 CFM @ 2.8 m/s
Width × Height287 × 592 mm
Face area0.1699 m²
Max flow @ 2.8 m/s590 L/s  ·  1250 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%591250.30
20%1182500.60
30%1773750.80
40%2365001.10
50%2956251.40
60%3547501.70
70%4138752.00
80%47210002.20
90%53111252.50
100%59012502.80

Carbon V-bank — 592 × 592 × 292

Rated 2500 CFM @ 2.8 m/s
Width × Height592 × 592 mm
Face area0.3505 m²
Max flow @ 2.8 m/s1180 L/s  ·  2500 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%1182500.30
20%2365000.60
30%3547500.80
40%47210001.10
50%59012501.40
60%70815001.70
70%82617502.00
80%94420002.20
90%106222502.50
100%118025002.80

Carbon V-bank — 592 × 287 × 292

Rated 1250 CFM @ 2.8 m/s
Width × Height592 × 287 mm
Face area0.1699 m²
Max flow @ 2.8 m/s590 L/s  ·  1250 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%591250.30
20%1182500.60
30%1773750.80
40%2365001.10
50%2956251.40
60%3547501.70
70%4138752.00
80%47210002.20
90%53111252.50
100%59012502.80

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.