22x22x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 21.75 x 21.75) - 3 Pack 5" Diameter + Product Details Size –

+ Product Details Size – Stick-on collar is 4" and it is compatible with duct 4"

This 12" X 10" end cap is constructed with 26-gauge galvanized steel

represents the height

+ Product Details Size - 20"w X 2"h is the size for the duct opening measurement only

22x22x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 21.75 x 21.75) - 3 Pack 5" Diameter + Product Details Size –+ Product Details 22" x 22" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 21. 75" x 21. 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