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Bosch sander dust extraction

Updated: 21 October 2026

You are sanding a wooden door indoors, the microfilter is clicked on, and the skirting is still dusty. The box or the bag is a bin for some of the dust, and it is not the control the Health and Safety Executive describes for sanding wood. This page is the hose, the holes and the mask. Peter F. used HSE guidance and the UK review themes on these amazon.co.uk listings, dated 19 October 2026. This is not a measured capture rate, and a qualifying purchase can earn a commission at no extra cost to you. The tools are on the [Bosch orbital sander](/hub/sanders/bosch-orbital-sander) comparison.

You are sanding a wooden door indoors, the microfilter is clicked on, and the skirting is still dusty.

Our top picks

Bosch Bosch GEX 18V-125 (L-BOXX)

Best overall

Bosch Bosch GEX 18V-125 (L-BOXX)
9.6/10about £145
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Bosch Bosch PEX 220 A

Best value

Bosch Bosch PEX 220 A
9.0/10about £48.49
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Bosch Bosch GEX 34-150

Rank 3

Bosch Bosch GEX 34-150
7.4/10about £200
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On this page
  1. 1.What is in the box on these Bosch sanders
  2. 2.What to connect for indoor wood dust
  3. 3.Faults that show up on these listings
  4. 4.When this is no longer a DIY setup

What is in the box on these Bosch sanders

The PEX 220 A lists microfilter 2 605 411 198. The PEX 400 AE names a dust box. The UniversalOrbit names a microfilter box. The EasyOrbit scope does not name dust hardware. Both GEX 18V-125 listings include a dust bag, part 2 608 000 715 on the solo. The GSS includes a dust bag. The GEX 34-150 names a dust box and an extraction adapter, and several UK reviews say the box was not in the carton. Do not copy “low dust” from a product page into a promise. Pressure and grit are on how to use a Bosch orbital sander.

What to connect for indoor wood dust

HSE asks for on-tool extraction into a Class M or Class H unit, with hoses that fit rather than taped joints. These listings do not describe the Bosch microfilter as Class M or Class H. Keep the sheet’s holes aligned with the pad. For most sanding in enclosed spaces, HSE’s example of at least APF 20 is an FFP3 mask. A vacuum does not retire the mask. Do not sweep the dust and do not blow it. The workplace limits Shopbam cites from HSE are 3 mg/m³ for hardwood dust and 5 mg/m³ for softwood dust, for a working day.
Bosch Bosch GEX 18V-125 (L-BOXX)

Testsieger

Bosch Bosch GEX 18V-125 (L-BOXX)
9.6/10about £145
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Faults that show up on these listings

A UniversalOrbit reviewer washed the microfilter and it stopped filtering. Do not wash it and expect it to work. Paper assistant 2 609 004 646, on the EasyOrbit and the UniversalOrbit, centres the disc. On the GSS, punch the sheet to match the plate. A disc stuck on rotated closes the path. On the GEX 34-150, several UK reviews say the dust box was absent while the photograph showed it. The buying guide does not turn a microfilter into a Class M unit.

When this is no longer a DIY setup

Hand the job on when someone is sanding wood for most of the working day. Bosch’s laboratory figures are 2.2 m/s² for the GEX 18V-125 on solid wood and 3.4 m/s² for the GSS 18V-13 on panel materials, each with an uncertainty K of 1.5. Do not dry-sand paint that may contain lead. A Class M vacuum is not a reason to sand suspected lead paint. If the GEX 34-150 dust box is missing, resolve it with the seller before you work indoors. The battery fork is on cordless or corded.

Common questions

Is the microfilter box enough indoors?
No, not as the control HSE describes for sanding wood. On these listings the PEX and UniversalOrbit boxes still leave dust in the room, according to reviewers. Use the box as a bin for the coarse dust, and connect a Class M or Class H vacuum for indoor wood sanding. Do not describe the Bosch box as HEPA or Class M. The listings do not say that.
Do I need a mask as well as a vacuum?
Yes for most sanding in an enclosed space. HSE’s example for at least APF 20 is an FFP3 mask. Wear it while you sand and while you empty the box. The vacuum captures dust at the pad. It does not remove the need for the mask, and it does not help if the holes in the disc are blocked.
What vacuum class does HSE name for wood dust?
Class M or Class H for on-tool extraction, and at least Class M when you clean up. Do not sweep and do not blow the dust. Tight hose joints matter. A taped cuff leaks beside your face. Employer local exhaust needs a thorough examination at least every 14 months. That last point is an employer duty.
How do the holes in the disc matter?
They are the only route from the pad into the box or the hose. Line them up with the pad. The paper assistant on the EasyOrbit and the UniversalOrbit, part 2 609 004 646, is there for that. On the GSS, punch the sheet to match the plate. A disc that looks flat and covers every hole leaves the dust in the room.
Can I wash the Bosch filter?
Do not wash it and expect it to work. A UniversalOrbit reviewer did, and the filter stopped filtering. Empty it carefully, with a mask on, and replace it when it is clogged. That applies to the microfilter on the green tools. A cloth dust bag on a GEX is a different part, and it is still not a Class M unit.
What if the GEX 34-150 arrived without a dust box?
The listing names one. Several UK reviews say it was missing while the photo showed it. Contact the seller before you sand indoors with that tool. Do not tape a household vacuum to the bare port and call it the same setup. Check the auxiliary handle in the same delivery. Both parts are on the included-components line.
What about lead paint?
Do not dry-sand paint that may contain lead. Extraction and a mask are the controls for ordinary wood dust. They are not a method for suspected lead. Stop and get advice. The age of the joinery is the clue, not the brand of the sander.

Related pages

Best Bosch orbital sander

Bosch orbital sander

Bosch orbital sander buying guide: pad and battery

Bosch cordless or corded orbital sander: which to buy

How to use a Bosch orbital sander without swirl marks

Sources

Sources taken from the research digest. Prices, stars and review counts are the stored amazon.co.uk listing figures.

  1. Bosch DIY — PEX 220 A (retrieved 19.10.2026)
  2. Bosch DIY — PEX 400 AE (retrieved 19.10.2026)
  3. Bosch DIY — EasyOrbit 18V-10 (retrieved 19.10.2026)
  4. Bosch DIY — UniversalOrbit 18V-20 (retrieved 19.10.2026)
  5. Bosch Professional — GEX 18V-125 (retrieved 19.10.2026)
  6. Bosch Professional — GSS 18V-13 (retrieved 19.10.2026)
  7. HSE — cutting and sanding wood (retrieved 19.10.2026)
  8. POWER FOR ALL — battery FAQ (retrieved 19.10.2026)