14x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 13.75 x 17.75) - 3 Pack Merv 2 + Product Details Size –

+ Product Details Size – 48"w X 24"h is the size for the duct opening measurement only

Adjustable airflow control – Adjustable airflow control: The system allows users to customize the amount of air supply

+ Product Details Size - 12"W X 8"H is (for duct opening measurement only)

+ Product Details Size - 8"w X 14"h is the size for the duct opening measurement only

How To Measure A Floor RegisterOverall Size: Measure the size of the opening

14x18x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 13.75 x 17.75) - 3 Pack Merv 2 + Product Details Size –+ Product Details 14" x 18" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 13. 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