Noclipmodel
From The DarkMod Wiki
Description
When the noclipmodel spawnarg is set to non-zero, default clipmodels can be created by using one set of the following spawnargs:
By default this creates a box. To create another shape, use the following spawnargs with the number of desired sides as the value:
Examples
"noclipmodel" "1" "size" "8 20 32"
This would create a box of 8, 20 and 32 units in X, Y and Z direction.