Merv 11 Pleated Air Filter - 19 3/8" x 19 3/8" x 1" Quantity:12-pack The "Practical Pleat" contains over

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

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so it can provide a lifetime of dependable service

than standard fiberglass filters purchased at retail outlets

with each stage capturing progressively smaller particles inside the filter

Merv 11 Pleated Air Filter - 19 3/8" x 19 3/8" x 1" Quantity:12-pack The "Practical Pleat" contains overAny 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.