3M Filtrete 20 in. W x 20 in. H x 1 in. D 11 MERV Air Filter (Pack of 4) VEL-X Brand Name: NaturalAire *Thickness: 1

3M Filtrete 20 in. W x 20 in. H x 1 in. D 11 MERV Air Filter (Pack of 4) VEL X Brand Name: NaturalAire *Thickness: 1 Brand Name: NaturalAire *Thickness: 1 *Electrostatic: No *Filter Class: Class II *Filter Frame Material: Beverage Board *Filter Material: Synthetic *Filters Bacteria: Yes *Filters Pollen: Yes *Filters Smoke: No *Filters Viruses: Yes *High Efficiency: No *Metal Mesh Support: Yes *Number in Package: 1 *Pleated: Yes *Product Type: Air Filter *Sub Brand: *Trimmable: No *Width: 17 1 2 *Filters Dust Lint: Yes *Filters Mold Spores: Yes *Height: 29 1 2 *MERV MPR Rating: 8 *Actual Size: 17 1 2 x 29 3 8 x 3 4 *Air Filter Size: 18x30x1 LevelQuik RS helps eliminate installation problems such as bond failure With electrostatic technology Height: 20 in