Merv 11 Pleated Air Filter - 17" x 28" x 1" Quantity:12-pack allowing the grease to drain

allowing the grease to drain into through below

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degrade and restrict air flow

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

Eliminates Filter Bypass

Merv 11 Pleated Air Filter - 17" x 28" x 1" Quantity:12-pack allowing the grease to drainAny 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.