Merv 13 Pleated Air Filter - 20" x 21 5/8" x 1" Quantity:12-pack the A+2000 uses stage loading

the A+2000 uses stage loading

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

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

Because we specialize in custom air filters

with each stage capturing progressively smaller particles inside the filter

Merv 13 Pleated Air Filter - 20" x 21 5/8" x 1" Quantity:12-pack the A+2000 uses stage loadingAny 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.