18x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 17.75) - 3 Pack w32h32 5mm of thickness to ensure

5mm of thickness to ensure a proper seal while being light and

+ Product Details Size – 18" x 36" or 36" x 18" is the size for the duct opening measurement only

Actual Filter Size – 23 3/4"w x 47 3/4" x 1"

actual front end outer dimensions are approximately 30 5/8" width X 30 5/8" height

18x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 17.75 x 17.75) - 3 Pack w32h32 5mm of thickness to ensure+ Product Details 18" x 18" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 17. 75" x 17. 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