Merv 8 Pleated Air Filter - 12" x 21" x 1" Quantity:12-pack Because we specialize in custom

Because we specialize in custom air filters

This is designed to fit into 1" Return Air Grilles

The SpeedLight䋢 Jr

They are constructed from 304 Stainless Steel material formed to exact specifications

we even have the odd sizes

Merv 8 Pleated Air Filter - 12" x 21" x 1" Quantity:12-pack Because we specialize in customAny 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.