COMPATIBLE: Premium HEPA and ACTIVATED CARBON filter Compatible with Coway Airmega Max2 400 400S 400(G) 400S(G) Air Purifier. Part# 3111735. TWO IN ONE：AIRMEGA Max2 True HEPA 400 400s filters can takes out large and air-borne particles. CARBON Filter can takes out more than 99.7% particles. In order to improve the performance of the air purifier, please replace the carbon filter every 10-14 months. EASY TO INSTALL: Simply remove the older and dirty Airmega 400 filter and replace it. Item Dimensions: 14.37 x 11.02 x 1.77 inches. CUSTOMER SERVICE: We value customer service and satisfaction. If you have any problems with the replacement filter of Coway Max2 fitting your air purifier, please contact us through our Amazon home page. Filter made of FSC-Certified paper UPC 759838140883 ASIN B08MFGTSV5 Brand Name Smilyan Unit Count 2 Count Item Weight 2.8 Pounds Manufacturer Smilyan Model Number AP-2015-FP Product Grade new Number of Items 2 Compatible Devices Air Purifier Common Applications Appliances, Residential Air Filter Construction Pleated Item Dimensions L x W x Thickness 14.29 L x 11.22 W x 2 Th