Forgive me for being a noob. It has been a while since I have used ZBrush and am starting to get back into it. Made a chair in Maya then imported it in ZBrush using GoZ. I am seeing transparent and cannot figure out to make it 2 sided looking solid. See picture.
Thanks
Go to “Tool > Display Properties” and enable “Double”.
Thanks for the quick response and for making my day. 
small_orange_diamond:D
If it’s suppose to be closed off the bottom you may need to recalculate the normals to face outwards. I know when working with Blender I sometimes have to recalculate the normals or some of the faces are inverted.
Double will not make it two sided, it will just allow you to see the back face of the polys (looking solid, not being solid)
Check your Normals in Maya and make sure they are all facing outwards… that is one of the issues that I know can cause this. Then bring it in zBrush again.