12x30x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 29.75) - 3 Pack 38 + Product Details High Quality

+ Product Details High Quality - Aluminum housing on the outside and on the inside for the best insulation value

Design – These Supply Diffusers with integral round necks are recommended for heating

Enjoy an air-tight enclosure with sealing strips between the inner and outer frame

+ Product Details Size – 10"w X 20"h or 20" x 10" is the size for the duct opening measurement only

12x30x1 MERV 2 Non Pleated Air Filter Replacement Filters (Actual Size 11.75 x 29.75) - 3 Pack 38 + Product Details High Quality+ Product Details 12" x 30" x 1" replacement air filters for your furnace, air conditioner, heat pump, or HVAC system (actual size: 11. 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