Product details:

For up to six months after installation, the RWF1031 by Tier1 keeps your water and ice tasting clean and fresh. The RWF1031 installs quickly and easily, so transforming your drinking water into a top-notch beverage is a breeze. The rectangle face plate is for use in place of the EWF01 Pure Advantage filter, the curved face plate is for use in place of the WF2CB PureSource2 filter. Please note there are two detached plates included in the packaging. Make sure to use the correct one as a replacement for your filter/refrigerator.