Merv 8 Pleated Air Filter - 11 3/8" x 11 3/8" x 1" Quantity:12-pack This is a 5" MERV

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

This design enables A+2000 custom air filters to maintain performance over the years

In general

One way to overcome this problem is to increase the surface area of the filter media

some just refer to them as electrostatic filters

Merv 8 Pleated Air Filter - 11 3/8" x 11 3/8" x 1" Quantity:12-pack This is a 5" MERVAny 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.