Elite Screens does not recommend attempting such an installation as in most cases it would not be possible. This is because the frame has to be lifted directly above and then placed down onto the brackets. The brackets will then latch onto the grooves of the frame and hold it in place. Mounting the wall brackets flush to the wall and ceiling would not provide the clearance needed for the frame to be lifted above the brackets. Elite Screens recommends the wall brackets be placed no closer than 4-6”(depending on the thickness of the frame) below the ceiling as that ditstance would give you the clearance needed to lift the screen above and then onto the brackets.