How can I find these models?

Not sure if this is the right place to post this but anyways, lots of RP maps use these nice looking rectangle bathtubs with curtains on it aswell as lots of other nice interior models aswell as some really nice looking realistic textures, are they in some pack or can I find them in some source game? I have a feeling I have seen them in L4D2 but I’m not sure.

If the map is on the workshop read the discriptions they should mention extra packs to download as well or say that you need to have a certain game installed aswell

Very old post but still need help with this and making a new one isnt worse than bumping.