first of all, sorry for my bad english. can i use models from 3d warehouse in my sketchup model and sell it?(for commercial use) . i wanna make money from it, but i’m afraid that it might be against the rules. THANKS IN ADVANCE 
Not the models themselves, but combined, derived work from them might work allright.(I am not a lawyer and you won’t get legal answers from Trimble employees, here
If in doubts, you should seek legal advice…