We recommend IFA welding smoke filter units certified W3, as they offers a minimum specification hallmark around air flow rates, filter efficiency & filter. alarms.
With a good number of portable extraction choices in the market place, choosing the correct one for your application can be tricky. Our Technical field engineers, can visit site, perform a Welding fume survey, recommend and install the correct unit with an LEV test.
Alternatively, read our article on 'Buying Welding Fume Extracion'.