AC geometry Problem
 

HI,

I have imported a geometry of AC attached to a Room. The Problem is that they are acting as two different bodies. How can I make it as one body.. provided that Ac and room also there. i tried boolean operation of subtract but it makes a slot on the face where Ac is attached. then the whole ac acts as inlet but i want to give inlet to AC grils at front. so that i can study the room simulation . kindly help me with this