Basic pleated air filter captures household dust and other large air particles. For residential use only. Lasts up to 3 months. White label. Type: Pleated Non-Electrostatic Material: Synthetic Size: 18 In. x 30 In. x 1 In. Actual Size: 17.82 In. x 29.82 In. x 0.88 In. Rating: 250 MPR Life of Product: 3 mo