Take air filtering to the next level. These electrostatic filters charged with static electricity reduce airborne particles such as dirt, dust, smoke, pollen and animal hair. They help keep dirt and objects from falling into ducts and they control the spread of pet dander through your HVAC system. Universal 4" x 12" size can be trimmed to fit 4" x 10" registers.

• Reduces airborne particles.
• Keeps dirt and other objects out of duct work.
• Features electrostatic filtering.
• Enjoy 90-day filtration.
• Check filter periodically for excess build-up and replace when necessary.