Secondary (Fine) Filters
F7 Pocket Filter

Class: F7
Efficiency:
80-90% for particles larger than 1 micrometer.
Applications:
Indoor air quality in cleanrooms.
Type:
Pocket filters, compact filters
Key Features:
F9 Compact Filter

Class: F9
Efficiency:
90-95% for particles larger than 1 micrometer.
Applications:
High-efficiency HVAC systems.
Type:
Compact filters, mini-pleat filters