Cheap extraction fan for spray booth

[thehomeengineer]

Hi All
I have been researching upper and lower explosive limits for paint booths.

This is my thinking
The area of the booth being 1.2 x 0.6 x 0.6 = 0.432m³ (4'x2'x2' = 16' ft³) and the fan moving 300m³/h (10500 ft³/h) there shouldn't be any issues with the vapours catching alight. I am working on the principle that I would only be able to spray a maximum of 22cc (1.3 cubic inch/h) of paint per hour (which I have never done with an airbrush) so the vapour volume to oxygen should be safe?.

I will also be using a spray booth paint arrestor extract filter media pad 100mm thick (4") filter dimension 300x300 (1'x1') I know this doesn't stop vapour exhausting from the booth.

I am sure there is an expert amongst the HMT community that can tell me if I am correct or not?.

Hope there is an expert amongst us
The Home Engineer