Laser Exhaust Requirements
http://support.epiloglaser.com/article/8205/17222/laser-exhaust-requirements
found this link ,hope it helps people choose the right size exhaust fan -i have a 8inch 1500m3/hour however i had to reduce from 8inch to 4 inch hose and the length of hose is 2meters so it has cut output by a bit -estamated 50% so i would be 750m3/hour.stock fan used to take 5 seconds to clear cabinet after cutting mdf -new fan keeps up with the smoke…