Merv 13 Pleated Air Filter - 17 1/2" x 29 1/2" x 1" Quantity:12-pack Filtering inserts are anti-microbial and

Filtering inserts are anti-microbial and are more efficient in capturing particles

some just refer to them as electrostatic filters

the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products

The secret behind the A+2000‰۪s custom air filters performance is the patented stage loading/peak and valley design

Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

Merv 13 Pleated Air Filter - 17 1/2" x 29 1/2" x 1" Quantity:12-pack Filtering inserts are anti-microbial andAny 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.