Paint Tent CFM Calculator
Exhaust airflow for a portable spray paint tent.
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ⓘ Live results
Results
- Required exhaust airflow
- 8,000 CFM
- Cross-sectional area
- 80 sq ft
- Filter face area needed at 250 FPM max
- 32 sq ft
Quick answer
Portable spray paint tents typically need 100 FPM of cross-draft face velocity to safely capture overspray.
CFM = cross-section area x face velocity
How to use the Paint Tent CFM Calculator
- 1Measure the tent's cross-sectional opening (width x height).
- 2Multiply by a 100 FPM target capture velocity.
- 3Select an exhaust filter bank sized so its face velocity stays below its rated maximum.
Worked example
Using the values the calculator loads with:
Inputs
- Tent width10 ft
- Tent height8 ft
- Target face velocity100 FPM
Results
- Required exhaust airflow8,000 CFM
- Cross-sectional area80 sq ft
- Filter face area needed at 250 FPM max32 sq ft
Frequently asked questions
Is 100 FPM a hard code minimum?
It's a common industry rule of thumb for open-face spray booths and tents; check local fire code for exact figures.
Explosion-proof fans required?
Yes for solvent-based coatings — use fans and lighting rated for the hazardous location.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.