# PUREFLOW Home Air Filter MERV 11, 20x20x1 Furnace Filter, 4 Layer High Efficiency Filtration for Dust, Smoke, Fumes, Pollutants (4 - Pack)

**Doorprice Score 6.1/10** (Mixed; likely 4.2–8.0, low confidence).
Price: $57.63 at PUREFLOW AIR (with est. tax $61.78; shipping set at checkout). Store rating 5.0/5 from 4 ratings.

## Specs
- Filter Rating: MERV 11
- Filter Media: Four-layer multi-stage filtration
- Pack Size: 4 filters
- Compatible Systems: Furnaces, air conditioners, HVAC units
- Filter Material: Paper
- Usage Type: Disposable

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