Replacement Heavy Duty 20x30x1 Aluminum Electrostatic Washable Air Purifie

Tough heavy duty aluminum frame with mesh design, durably constructed and built to last years. Self-charging, these electrostatic air filters use air and static electricity to capture airborne particles, helping to improve your home's ventilation efficiency (no electrical connections needed). Easy to install, maintain, and clean (vacuum or spray with a low pressure hose and rinse off thoroughly with water, letting dry before re-installing; recommended every 1-3 months). Replace disposable air fi