GUANLIN hospital medium efficiency bag filter, F7 pocket filter for ward and clinic air handling units.
F7 medium efficiency pocket bag filters for hospital and clinic air handling units, protecting terminal HEPA filters and supporting infection control strategies.
Description
Hospital air handling is a staged system by design: coarse filtration protects the plant, medium filtration protects the HEPA terminal, and the HEPA terminal protects the patient. When the medium stage is under-specified or changed late, the HEPA filters load prematurely and the whole change schedule collapses. F7 pocket filters carry that load with high dust holding capacity and a stable pressure drop.
Why Choose GUANLIN Hospital Bag Filters
- F7 efficiency — the standard cleanroom and hospital pre-filter class.
- Large media area — pockets hold far more dust than a flat panel of the same face size.
- Stable pressure drop — keeps ward airflow and pressure relationships within design.
- Stitch-bonded pockets — no collapse under airflow.
- Galvanised or plastic frame — matched to the AHU construction.
- Custom pocket counts — sized to the available plenum.

Application Scenarios
Ward and clinic AHUs
Protecting terminal HEPA and maintaining pressure relationships.
Operating theatre suite
Medium stage ahead of the critical terminal filters.
Isolation and negative pressure rooms
Reliable staged filtration for containment.
Diagnostic and imaging areas
Clean air for equipment and patient comfort.
Pharmacies and clean preparation
Pre-filtration for cleanroom-grade spaces.
Laboratories
Particle control ahead of terminal filters.

Our Factory

GUANLIN has manufactured filtration products in Dongguan since 2003, operating a 6,000 m² plant with automated filter bag sewing lines, automated singeing equipment, cage welding systems and pleated filter production lines. Products are exported to Singapore, Vietnam, Malaysia and other markets, with ISO 9001 and ISO 14001 certified quality management.
Product Specifications
| Item | Specification |
| Efficiency | F7 (EN 779) |
| Type | Pocket bag filter, 3–8 pockets |
| Media | Synthetic fibre, stitch-bonded pockets |
| Frame | Galvanised or plastic |
| MOQ | 20 pcs |

FAQ
Q1. Why F7 for hospitals?
It is the standard class ahead of terminal HEPA in clinical ventilation.
Q2. How often to change?
At final pressure drop, typically 3–6 months.
Q3. Can you match our frame size?
Yes, including pocket count and depth.
Q4. MOQ and lead time?
20 pcs, 10–20 days.
Key Specifications
- Efficiency: F7
- Type: pocket bag filter
- Application: hospital and clinic AHU
- MOQ: 20 pcs





