Filtrete Allergen, Bacteria & Virus Air Filters help capture unwanted particles from your household air, contributing to a cleaner, fresher home environment. By proactively capturing dust, bacteria, viruses and allergens, these high performance filters help improve your homes air quality. Type: Pleated Electrostatic Material: Synthetic Size: 14 In. x 30 In. x 1 In. Actual Size: 13.84 In. x 29.84 In. x 0.78 In. Rating: 1500 MPR Life of Product: 3 mo