- Saves energy and reduces energy bills
- Improves indoor air quality
- Blocks allergens and other contaminants, including deadly gases like carbon monoxide and radon from entering the HVAC system at the air filter slot.
- Universal one size fits all
- Reusable, easy on / easy off design
- Magnetically attaches to the duct work
- Two piece design is 4-3/4" wide and works with any 1" filter up to 25" long
Installation: Simply remove FilterLock from the package and cover the filter slot, letting the two pieces overlap in the center of the slot opening. Built-in magnets hold FilterLock securely in place.
For replacement instructions, click here