FilterLOCK® seals furnace and air conditioning air filter slots to reduce utility bills and improve indoor air quality.
- Saves Energy and Reduces Utility Bills
- Improves Indoor Air Quality
- Blocks Allergens and Contaminates From Entering Duct System
- Year-Round Protection and Savings
- Universal Fit - Adjusts to Fit all Standard One Inch Air Filters
- Reusable: Easy-On and Easy-Off
- Magnetically Attaches to Metal Ducts
- Made in the USA
• Seals air filter slot
• Magnetically attaches to metal duct
• One-size-fits-all – For all standard air filters
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