<prompt> Recommended reflection factors include each of the following, except -Ceilings 80Roofs 40Walls 50 to 60Furnitures 30 to 40  <response>: PARK TB 23rd edtn pg 740 Recommended reflection factors include:- - ceilings and roofs - 80 - walls - 50 to 60 - furniture - 30 to 40 - floor not more than 15 to 20 