Searching for Rolling door lower snap in guide

Thanks for reaching out! This is a retainer piece from an older version of our 23-041. Stanley does not make these anymore, unfortunately, and they changed the design of the roller itself years and years ago. So the rollers don't use this piece anymore.

The good news is that your roller should still function without this retainer. If it doesn't, I would recommend updating your existing rollers to the new 23-041 to replace the originals.

Dimensions for 23-041

Alternate view of 23-041