WE OFFER ALL BRANDS IN MERV 8, MERV 11, MERV 13, PLUS......
"Our #1 recommended air filter"
WHY?..... ODOR DEFENSE removes dust particles as small as 3 microns (.00011811 Inches) and has an arrestance of up to 95%, (As Per ANSI/ASHRAE STANDARD 52.2) To illustrate, the dot inside the parenthesis ( . ) is 615 microns. Compare this to 3 microns.
But here is the beauty, ODOR DEFENSE ALSO removes foul odors and harmful gases from the airflow in your home, while keeping air resistance at a low level. To Discover all about this GREAT Filter, go here.
SEAL-TIGHT™ GRILLE FILTER
Seal-Tight™ Return Air Grille filters have a 3/4 inch foam strip along
the perimeter. Unlike other return grille filters, the special foam strip
creates a very tight fit that prevents any air from by-passing the filter.
GO TO THE VERY BOTTOM TO SEE
FILTERS WITH A CARDBOARD LIP