Merv 13 Pleated Air Filter - 19 3/4" x 21 1/2" x 1" Quantity:12-pack This is designed to fit

This is designed to fit into 1" Return Air Grilles

Finally they are factory made so you don‰۪t have to deal with the hassle of trying to cut and size your custom air filters and they come with a full warranty

from the air stream

these can be purchased in any conceivable size

They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

Merv 13 Pleated Air Filter - 19 3/4" x 21 1/2" x 1" Quantity:12-pack This is designed to fitAny Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop, and long service life which reduces HVAC equipment maintenance and energy costs. A higher MERV rating means that the air filter that you are about to purchase possesses a higher amount impurity filtration ability than your ordinary filter.