12x36x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 35.75) - 3 Pack 14" Diameter + Product Details Size –

+ Product Details Size – 14" x 22" or 22" x 14" is the size for the duct opening measurement only

+ Product Details Size - 20"w X 34"h is the size for the duct opening measurement only

This grille is ideal for both sidewall and ceiling installations

+ Product Details Size – 8" x 32" or 32" x 8" is the size for the duct opening measurement only

you will need a 14" x 20" filter

12x36x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 35.75) - 3 Pack 14" Diameter + Product Details Size –+ Product Details 12" x 36" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 11. 75" x 35. 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