22x22x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 21.75 x 21.75) - 3 Pack 12" Diameter + Product Details Size –

+ Product Details Size – 20"w X 18"h is the size for the duct opening measurement only

Actual Filter Size – 11 3/4"w x 17 3/4" x 1"

Fully extruded aluminum blades and flange frame

+ Product Details Size & Compatibility – The 7" galvanized sheet metal straight transitioning duct boot is compatible with duct 7"

actual front end outer dimensions are approximately 10 5/8" width X 38 5/8" height

22x22x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 21.75 x 21.75) - 3 Pack 12" 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