G4 vs M5 Air Filters: What's the Difference and When to Use Each?

Not sure whether your project needs G4 or M5 filters? Here's a simple comparison to help you select the right one.

🔍 G4 Filter (Pre Filter)

90% arrestance

As first-stage filter to block larger dust particles

Synthetic non-woven fiber

🔍 M5 Filter (Medium Efficiency Bag Filter)

40-60% gravimetric efficiency (EN 779)

Multi-pocket synthetic media

G4 panel filterM5 bag filter.

Using high-capacity G4 filters with lower pressure drop helps reduce HVAC energy use-especially in 24/7 facilities.