Quote from Lpfreaky90 on October 15, 2011, 4:25 am

This file contains two prefabs: one for a doorframe, one for a funnel frame.

To use these, place them in steam/steamapps/common/portal 2/bin/Prefabs.
In hammer, click the entity tool and then select prefabs, and choose the one you want to use.

File Name: Prefabs.rar
File Size: 4.79 KiB
Click here to download Frames prefabs