GUANLIN medium efficiency bag filter, F7 F8 F9 pocket filter for AHU and cleanroom pre-filtration.

The medium efficiency stage is where most of the value in an air handling system is created. It captures the fine particulate that the primary filter passes, protecting the HEPA stage behind it and doing so with a large media area that keeps resistance low. Pocket construction gives that area without needing a deeper housing.

Why Choose GUANLIN Medium Efficiency Bag Filters

1. F7–F9 efficiency — high fine particulate capture.
2. Pocket construction — large media area in a compact frame.
3. High dust holding — long service intervals.
4. Stable efficiency — performance holds as the filter loads.
5. Low resistance — reduced fan energy.
6. Galvanised frame — rigid and durable.

Application Scenarios

Cleanroom AHU
Stage before terminal HEPA filters.

Pharmaceutical facilities
Grade C and D air supply.

Hospital theatres
Pre-filtration for critical spaces.

Electronics assembly
Particle control in production areas.

Food processing
Clean area air supply.

Commercial buildings
Improved indoor air quality.

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

FAQ

Q1. How many pockets do I need?
Match to your frame size and airflow; typically 6 to 8.

Q2. When should it be replaced?
On final pressure drop, typically 2–3 times the clean value.

Q3. Is it washable?
Not recommended; replace as a unit.

Q4. MOQ and lead time?
50 pcs, 10–20 days.

• Efficiency: F7 / F8 / F9
• Type: pocket bag filter
• Media: synthetic microfibre
• MOQ: 50 pcs