Forgot to add, I paid $15 psf for this, so total of 3 places for installation cost me $800 plus. They were excellent in their service. I visited them on Tuesday to select the grilles, they came down on Wed to take measurements, and did the installation for me on Sat. They were very accommodating and rushed for me cos I told them I wanted to move in soon, and yet they did not compromise on the workmanship.