Cleanout Plug for 3" PVC Pipe

This is a 3" plug that goes into a cleanout wye (or any elbow that is 3").

In the picture, this is the wye that I am using:

https://www.homedepot.com/p/NDS-PVC-S-D-45-Wye-3-in-Hub-X-Hub-X-Hub-3P08/204799696

The plug is wedged in there since it has a taper. Just push it in as deep as you'd like. Twist off to remove.

PETG for outdoor UV resistance