12x20x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 19.75) - 3 Pack 14" Round Duct Pipe ensuring they don't overlap

ensuring they don't overlap

12" X 12"h Is The Size For The Duct Opening Measurement Only

+ Product Details Size & Compatibility – The size of galvanized sheet metal straight floor boot is 14" X 4" X 8"

+ Product Details Size – 14"w X 22"h is the size for the duct opening measurement only

Perforated steel grille for return air flow

12x20x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 19.75) - 3 Pack 14" Round Duct Pipe ensuring they don't overlap+ Product Details 12" x 20" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 11. 75" x 19. 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