Merv 13 Pleated Air Filter - 13 1/8" x 21 5/8" x 1" Quantity:12-pack Keeps HVAC system cleaner and

Keeps HVAC system cleaner and more efficient

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

To find the size the old unit should have sizing information printed on it

And there are no metal parts that could lead to corrosion or oxidation within the filter

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

Merv 13 Pleated Air Filter - 13 1/8" x 21 5/8" x 1" Quantity:12-pack Keeps HVAC system cleaner andAny 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.