Adaptation Model: Fit for -H133 Replacement Filter, 3-in-1 True HEPA & Activated Carbon & Pre-Filters kit, Part # -H133-RF. 3-in-1 Design: Pre-Filter removes Hair, Pet Dander and Fiber; True HEPA Filter removes Smoke, Dust; Activated Carbon Filter removes Smells. High Quality HEPA: True HEPA filter helps capture up to 99.97% of airborne particles as small as 0.3 Micrometre, and helps remove particles like dust. Useful Filter: Activated carbon layer to target household odors. the primary screening layer can capture particles and extend the filter life. Warm and Caring: To in your home, we recommend replacing the filter accessories every 6-8 months. Colour:As shown Material:plastic Package Contents: 1 x filter elements Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.