Second stage HEPA 500 MERV 8 pre-filter. Captures finer particles to help extend the life of the HEPA filter. Synthetic fiber filter media rated at 30% efficiency. Sturdy frame won't "blow out" under heavy use.
Dri-Eaz® DefendAir® 2nd Stage Pre-Filter, Synthetic Fiber Media, Cardboard Frame, 30 % Filter Efficiency, Finer Particle Final Resistance
| Filter Efficiency | : | 30 % |
| Final Resistance | : | Finer Particle |
| Frame Material | : | Cardboard |
| Media Material | : | Synthetic Fiber |
- Low pressure drop and superior efficiency
- High dust holding capacity
- Extends life of HEPA filter element