Invisible Walls & Grenades - NEED HELP

[krezeb]

I'm trying to make a custom map for CS:S, but am having a little trouble with something.... I'm trying to make an Invisible Wall that players CAN'T walk through, but CAN throw grenades through.

I know that this can be done, I just don't remember how. ;(

Any help would be appreciated. Thx

 

[wakarimasen]

Use the texture called tools/playerclip.

 

[krezeb]

I knew it was something like that. Thx for the help .