GUARANTEED FIT- The ice maker filter for the Opal nugget ice maker is easy to install and fits perfectly. SCALE INHIBITING FILTER- Get the freshest nugget ice thanks to an innovative scale-inhibiting water filter that reduces the solidification of scale within the ice maker, elongating time between maintenance while also removing bad flavors, chlorine and VOCs from the water. MEETS NSF & ANSI STANDARDS- Count on the water filter to remove chlorine taste and odor, and enjoy your ice every time you make it. EASY ICE MAKER FILTER REPLACEMENT- No tools or water turnoff are required to replace the water filter cartridge. REPLACE FILTER EVERY 3 MONTHS- For best results, install a replacement water filter approximately every 3 months. Compatible with all versions of the Opal Nugget Ice Maker including: XPIO13SCSS, XPIO13BCBT, XPIOX3SCSS, XPIOX3BCBT, XPIO23SCSS, XPIO23BCBT.