Purolator Model F312-18241, HVAC Air Filter 18" x 24" x 1"
Panel filter utilizing the Purolator Monobond concept of a one-piece frame sealed to the media using heat and pressure. Fiberglass media is evenly coated with a gel adhesive to prevent finer particle migration. Full depth loading and high dust holding capacity. Filter media has a skin backing and is evenly coated with a jelled adhesive.