Qty Per Unit: Package of 12 Register MERV 11 Air Vent Filters
Register Vent Filtration
Allergy Reducing Air Vent Filters MERV 11 has a permanent electrostatic charge to help trap dirt, dust, smoke & pollen sized particles through furnace/AC registers. Keeps dirt & objects from falling into ducts.
Can be trimmed to fit standard size vents – 4″ X 12″ and under.