Premium True HEPA filter with activated carbon infused For Shark HE400 air purifier. This filter is also compatible with the model HE401, HE402 and HE405. High quality HEPA filter captures 99.97% of airborne particles down to 0.3 microns. Activated carbon removes any unfavorable household odor. Preliminary filter on one side prevents visible particle such as hair and dust from entering into the core device. Suggest replacing the filter every 6 months the most to optimize the performance of the air purifier. 3 sets of filter included. HEPA filter dimension approx. 15.08 x 1.59 x 17.05". Quality meets or exceeds leading national brand
