This Premium Push Button Refrigerator Water Filter is used in side-by-side refrigerators with filter access in the interior. It is smaller and has a translucent cartridge. This NSF® Certified filter reduces cysts, asbestos, chlorine taste and odor, particulates (class I), and lead. The contaminants or other substances removed or reduced by this water filter are not necessarily in all users' water. Replace every 6 months ensures clean, safe drinking water. Replaces FILTER1, FILTER 1, W10291030, W10295370.