Noble 214 Positive Weep Protector

This patented clear plastic ring is designed to keep mortar from the weep holes in a drain. The ridges of the Positive Weep Protector allow for water to flow underneath the mortar and into the weep holes.

In other words, the drain is allowed to function the way it was designed to function and you don't get called back for a slow leak that could require a major tear out.