Merv 13 Pleated Air Filter - 17 1/2" x 35 1/4" x 1" Quantity:12-pack You may know them as

You may know them as washable air or even permanent air filters

The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

allowing the grease to drain into through below

The SpeedLight uses powerful magnets to hold the mounting plate in place

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

Merv 13 Pleated Air Filter - 17 1/2" x 35 1/4" x 1" Quantity:12-pack You may know them asAny Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop, and long service life which reduces HVAC equipment maintenance and energy costs. A higher MERV rating means that the air filter that you are about to purchase possesses a higher amount impurity filtration ability than your ordinary filter.