Naturalaire Pleated Filter 17-1/2 " X 23-1/2 " X 1 " Synthetic Pleated Media Merv 8UPC: 031949145804 Manufacturer Part No: 84858. 01175235 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