These replacement filters are for Simair machines only. If you are not heavy users why not try one of our 3 piece intake filter packs -Simair Filter sizes as follows -FPA2 – 700 × 500 Intake and Charcoal -FPA3 – 500 × 500mm Intake and Charcoal -Uni-booth – 650 × 510mm Intake and Charcoal The A1 machine utilizes 2 of the A2 intake and 2 x A2 charcoal filters. Intake filters should be changed every 4 weeks depending on use. As soon you can see the surface of the filter is covered in glue and excess glue cannot be filtered through then you should replace the filter. Charcoal filters should be changed at least every 6 months These high-grade activated charcoal impregnated polyester fibre filters have long been recognised as an exceptional absorbent material retaining vapours and gases within its micro-porous structure.
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