Hi - Thank you for your question! The floor plan/area of the foyer is 72” x 143 ½”. The lower portion of the wall, where the niches are located, is 148” by 108”. It continues up after the line you see above the niches and goes all the way to 168”.

The niche sizes are (starting from left top)

--19 ½” x 24”

--19 ½” x 10”

--Bottom 41 ½” x19”

--Top right 17” x 39”

Who is the manufacture of the light fixture