The Flanders Cut-to-Fit Series 40655.012436 Permaire Pad is a 24" x 36" x 1" filtration media pad constructed of Permaire, synthetic fibers coated with resin and baked together. It is easily cut to fit needed sizes. The 40655.012436 pad is a washable, odorless filter. The maze of fibers in a Permaire filter creates an electrostatic charge to catch and hold airborne contaminants.
A natural electrostatic charge catches and holds airborne contaminants especially dust.