This is an old post but these little buggers just popped their heads up again in a game I am playing so I went online to do some more research. These rockets came in a wooden crate which weighed 174lbs per rocket. The crate was placed on the ground, two little legs extended, a wire run out and then the crew had to hide to fire them from the blast. They were not designed as close support house clearing weapons, but as infantry mobile rocket artillery support.
Thus: they could not be fired from inside a room just like the PzFst cannot be, they are far too heavy to carry, it would take three men to move one of these slowly and without equipment, probably 5 with a full combat load, and they were designed as artillery support.
Why can we find this information but Shrapnel can't? After all the patches this still hasn't been fixed. Amazing.
Some of us are busy doing things; some of us are busy complaining - Debasish Mridha