Panel filters
Glass panel filters
Spun glass fibre pre-filters with outstanding dust and paint holding capacity, temperature resistant up to 180°C for workshops, paint shops and extraction.
- G3
- ISO Coarse
- 15mm, 22mm, 47mm, 98mm

Filter grade
G3 / ISO Coarse
| EN 779 class | G3 |
|---|---|
| ISO 16890 class | ISO Coarse |
| Filter role | Pre-filter, paint and dust arrestance |
| Media | Spun glass fibre |
| Frame | Card, metal frame option |
| Frame depths | 15mm, 22mm, 47mm, 98mm |
| Max operating temperature | Up to 180°C |
| Sizes | Standard and bespoke sizes |
| Testing | Media tested to ISO 16890 and EN 779:2012 |
Standard sizes
Common face sizes
Nominal imperial sizes with their actual metric face dimensions. Other sizes are available to order.
| Nominal (inches) | Actual (mm) |
|---|---|
| 24 × 24 | 596 × 596 |
| 24 × 12 | 596 × 287 |
| 25 × 16 | 625 × 395 |
| 20 × 16 | 496 × 395 |
| 24 × 20 | 596 × 496 |
| 25 × 20 | 625 × 496 |
| 20 × 20 | 496 × 496 |
| 12 × 12 | 287 × 287 |
Product features
Construction and performance
- Pre-filtration (G3, ISO Coarse) for carpenters' workshops, automotive, metalworking, paint shops and general air conditioning and extraction.
- Constructed from spun glass fibre in a card frame.
- Outstanding dust and paint holding capacity.
- Temperature resistant up to 180°C.
- Disposable and environmentally friendly.
- Metal frame option available.
- Frame depths of 15mm, 22mm, 47mm and 98mm.
- Media tested to ISO 16890 and EN 779:2012.
Key benefits
- Low-cost pre-filtration for coarse dust, extending the service life of more efficient secondary filters.
- Card or metal frames available to suit your requirements.
Typical applications
- Carpenters' workshops
- Automotive
- Metalworking
- Paint shops
- General air conditioning
- Extraction
Talk to the Maxi team
Interested in glass panel filters?
Compare the range
How glass compares with other panel filters
| Specification | Synthetic | Glass | Pleated | Metal cased pleated | High capacity pleated |
|---|---|---|---|---|---|
| EN 779 class | G3 – G4 | G3 | G4 – M5 | G4 | G4 |
| ISO 16890 class | ISO Coarse 50% – 60% | ISO Coarse | ISO Coarse 60% – 95% | ISO Coarse 80% | ISO Coarse 60% |
| Media | Polyester fibre pad | Spun glass fibre | Cotton / polyester blend, pleated and bonded to metal mesh | Synthetic pleat pack, graduated density | Cotton / polyester blend, 50% more pleats |
| Frame | Card, metal frame option | Card, metal frame option | Moisture-resistant card | Galvanised steel, wire rod W clips each face | Moisture-resistant card, expanded steel support grid |
| Frame depths | 15mm, 22mm, 47mm | 15mm, 22mm, 47mm, 98mm | 22mm, 47mm, 97mm | 20mm – 100mm | 22mm, 47mm, 97mm |
| Max temperature | Standard HVAC | Up to 180°C | Standard HVAC | Up to 80°C | Standard HVAC |
| Availability | Standard and bespoke sizes | Standard and bespoke sizes | Stocked sizes next-day, non-standard made to order | Stocked sizes next-day, non-standard made to order | Non-standard sizes available to order |
G3 – G4Synthetic panel filters
Pre-filter or basic filtration
- ISO 16890
- ISO Coarse 50% – 60%
- Depths
- 15mm, 22mm, 47mm
G4 – M5Pleated panel filters
Pre-filter for air handling systems
- ISO 16890
- ISO Coarse 60% – 95%
- Depths
- 22mm, 47mm, 97mm
G4Metal cased pleated panel filters
High-capacity pre-filter, damp or high-airflow duty
- ISO 16890
- ISO Coarse 80%
- Depths
- 20mm – 100mm
G4High capacity pleated panel filters
High-capacity pre-filter, higher air volumes
- ISO 16890
- ISO Coarse 60%
- Depths
- 22mm, 47mm, 97mm
FAQs
Glass panel filters: frequently asked questions
Glass Panel Filters are designed for pre-filtration in a wide range of applications, including carpenters' workshops, automotive facilities, metalworking environments, paint shops, and general air conditioning and extraction systems. They help capture larger airborne particles before air passes through secondary or higher-efficiency filters.
Make an enquiry
Make an enquiry about Glass Panel Filters
Simply fill in the form below to make your enquiry and one of the Maxi team will get back to you as soon as possible.
Technical help without the hard sell
Need glass panel filters?
Send the face size, depth, grade and quantity, or a photo of the existing label, and Maxi will confirm the right specification.
