Merv 13 Pleated Air Filter - 18" x 18" x 1" Quantity:12-pack This is a 5" MERV

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

PACK of 6 pads for Pad and Frame Air Filters

In general

the more efficient a filter is at removing particles

Merv 13 Pleated Air Filter - 18" x 18" 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.