🎨 NFPA 33 / OSHA Downdraft Velocity (100 FPM Cross Section), Exhaust Fans CFM

Industrial Paint Spray Booth Airflow Calculator

Size commercial industrial and automotive paint spray booth ventilation under NFPA 33 & OSHA 1910.107: calculate required continuous downdraft velocity (100 FPM over floor pit area), exhaust fan airflow CFM, multi-stage fiberglass overspray arrestor filter banks, and finishing shop margins.

1. Project & Operating Inputs

Booth Floor Grid Length (Feet e.g. 30 ft Long Booth)

Booth Width (Feet e.g. 16 ft Wide)

Customer Turnkey Invoiced Booth Price ($)

Direct-Drive Tube-Axial Fan, Make-Up Air Gas Heater, Filters ($)

2. Financial Breakdown & Yield

NFPA 33 DOWNDRAFT AIRFLOW CFM

Turnkey Booth Build Profit

Finishing Equipment Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost