Merv 8 Pleated Air Filter - 8" x 14" x 1" Quantity:12-pack such as dust

such as dust

these can be purchased in any conceivable size

with each stage capturing progressively smaller particles inside the filter

if not you can measure it or check the HVAC unit and the owner‰۪s manual

Merv 8 Pleated Air Filter - 8" x 14" x 1" Quantity:12-pack such as dustAny 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.