10x30x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 9.75 x 29.75) - 3 Pack Return Grille Ideal for Walls & Ceilings:

Ideal for Walls & Ceilings: Designed for seamless installation in standard 20" X 6" duct openings

Actual Filter Size – 21 3/4"w x 5 3/4" x 1"

+ Product Details Size - 16"w X 36"h X 2"d (for duct opening measurement only)

Material – 1680D Polyester

+ Product Details Size – 30" x 36" or 36" x 30" is the size for the duct opening measurement only

10x30x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 9.75 x 29.75) - 3 Pack Return Grille Ideal for Walls & Ceilings:+ Product Details 10" x 30" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 9. 75" x 29. 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