Asking which filter is better is an incomplete question. Filtration in a paint booth is a sequence of stages, and each stage sits in a different place and does a different job.
The EU3 EU4 EU5 filter classes are what this family delivers across the stop, pre- and ceiling stages, with configurations reaching three-stage bag and high-efficiency filtration at 98% or better.
Three stages, not one filter
The stop filter catches overspray before it reaches the extraction path. Pre-filtration cleans incoming air ahead of the air handling unit. Ceiling filtration is the last thing the air passes through before it touches the coated part, which makes it the stage with the most direct effect on surface cleanliness.
What is delivered in this family
| Stage | Position | Class delivered |
|---|---|---|
| Stop filter | After the part, before the extraction path | EU3 · EU4 · EU5 by configuration |
| Pre-filtration | On incoming air, ahead of air handling | EU3 · EU4 · EU5 by configuration |
| Ceiling filtration | Above the chamber, before the part | EU3 · EU4 · EU5 by configuration |
| Higher configuration | Large cabins and stricter sectors | Three-stage bag and high-efficiency filtration at ≥98% |
Why the class is set with the configuration, not after installation
Filter class changes airflow resistance, and resistance changes what the fan must do to reach the required air volume. Air capacity in this family runs from 18,000 to 190,000 m³/h per supply or extraction set. Choosing the class after installation therefore means either a filter the fan cannot pull through, or a fan larger than the job needs.
Frequently asked questions
Is the higher class always better?
No. A higher class gives cleaner air and higher resistance at the same time, so it is chosen against the type of work and the finish level required. Colour-matching work in collision centres calls for ceiling filtration at the highest class the model offers, while other work is served by a lower class.
When is high-efficiency filtration called for?
Three-stage bag and high-efficiency filtration filtration at 98% or better is delivered in large-structure cabins, where filtration and safety requirements go beyond the automotive footprint.
Does filtration change by industry?
Yes. Aerospace, marine and rail are delivered with filtration and safety requirements beyond the automotive footprint, woodworking calls for extraction that handles dust and overspray together, and auto dealers are specified with ceiling filtration at the highest class the model offers.
Are filters available locally?
Local filter availability is one of the published selection criteria in this family, particularly in automotive repair workshops where serviceability is prioritised over full automation.
Related reading
- Booth Walls
- Heat Pump Paint Booth
- Short Wave Infrared Curing in a Paint Booth
- water curtain paint booth
What to do next
Send the dimensions of the largest part to be coated, your site area and the supply capacity available, and we will come back with an internal size and a configuration built on it. Talk to a specialist. The published range sits on the paint booth family page.