18x24x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 23.75) - 3 Pack Height_12in + Product Details Size –

+ Product Details Size – 10"w X 3"h is the size for the duct opening measurement only

Actual Front End Outer Dimensions Are 14" Width X 10" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

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+ Product Details Size - 24"w X 4"h is the size for the duct opening measurement only

during winter

18x24x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 23.75) - 3 Pack Height_12in + Product Details Size –+ Product Details 18" x 24" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17. 75" x 23. 75") A unique combination of cotton & synthetic fibers gives you the most filtration and the least air resistance equals great air & easy airflow for your system. The non pleated design provides low airflow resistance while still effectively capturing dirt and particles such as standing dust, spray paint