28x34x1 (Exact Size) BioAir Electrostatic Washable Permanent A/C Furnace Filter - DESIGNED FOR GEOTHERMAL UNITS - Save $$$ - Just Vacuum or Hose Off and Reuse
- High Dust Arrestance and LOW Air Resistance.
- 5-stage filtration with 4 layers of 100% Virgin Polypropylene Woven Electrostatic Fabric.
- No Risk - 100% Satisfaction Guarantee and Lifetime Warranty.
- Solid Rust-Proof Aluminum Frame - Made in US.