16x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 15.75 x 17.75) - 3 Pack 3" Round Duct Pipe + Product Details Size -

+ Product Details Size - 6"w X 22"h is the size for the duct opening measurement only

providing a reliable connection for 8" round ducts

High Quality – High quality ABS plastic will never rust

+ Product Details Size - 28"w X 20"h X 2"d (for duct opening measurement only)

16x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 15.75 x 17.75) - 3 Pack 3" Round Duct Pipe + Product Details Size -+ Product Details 16" x 18" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 15. 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