GUANLIN dust collector cartridge set, two stage coarse pre-filter and fine secondary element combination kit.
Two-stage cartridge sets pairing a coarse pre-filter with a fine secondary element, extending element life and lowering average pressure drop in mixed coarse and fine dust collectors.
Description
Mixed-stage cartridge sets solve a problem single-stage collectors cannot: a coarse pre-filter catches the bulk of the dust, while a finer secondary element polishes the air before it reaches the blower. The result is longer element life, lower average pressure drop and cleaner exhaust than one element doing both jobs badly.
Why Choose GUANLIN Cartridge Sets
- Two-stage filtration — a coarse element takes the bulk load and a fine element polishes the air.
- Longer element life — the secondary element sees far less dust than in a single-stage design.
- Lower average pressure drop — spreading the load across two stages keeps resistance in the blower curve.
- Cleaner exhaust — the fine stage captures what the coarse stage passes.
- Complete kit — both elements, gaskets and mounting hardware in one order.
- Custom combinations — media and rating for each stage selected to your dust.

Application Scenarios
Mixed coarse and fine dust collectors
Where a stream carries both shavings and fine dust, a single element either blinds quickly or passes the fine fraction.
Powder coating and overspray recovery
Coarse overspray and fine airborne powder are handled by separate stages, improving recovery and exhaust quality.
Metalworking with mixed swarf and fume
Chips and sub-micron fume in one collector require two different ratings.
Woodworking MDF and particleboard
Chip loaders catch the bulk and the fine stage protects the blower.
Retrofit of single-stage collectors
Adding a pre-filter stage extends the life of the existing fine element.
Pharmaceutical and chemical powder handling
Product recovery and exhaust polishing in one installation.

Applicable Working Conditions
- Mixed coarse and fine dust streams
- Dry dust, non-condensing
- Two-stage housings or retrofit pre-filter modules
- Media for each stage selected to the dust

Product Specifications
| Item | Specification |
| Set Contents | Coarse pre-filter element + fine secondary element |
| Pre-filter Rating | Coarse (typically 10–100 μm) |
| Secondary Rating | Fine (0.3–10 μm depending on media) |
| Outer Diameter | Ø325 mm standard and custom |
| Length | 600 / 660 / 1000 mm and custom |
| MOQ | 10 sets |

FAQ
Q1. Why use two stages?
The coarse stage takes the bulk load so the fine stage lasts much longer and keeps exhaust clean.
Q2. Can I buy the stages separately?
Yes, both elements are available individually.
Q3. Will it fit my collector?
It fits two-stage housings and retrofit pre-filter modules; send dimensions to confirm.
Q4. MOQ and lead time?
10 sets, 7–15 days.
Key Specifications
- Set: coarse pre-filter + fine secondary
- Ratings: 10–100 μm / 0.3–10 μm
- OD: Ø325 mm standard
- MOQ: 10 sets





