celexon 99″ Manual Professional Plus pull down projection screen | 87 x 49 inches viewing area | 16:9 format | Wall or ceiling mounting | Gain factor of 1.2 for home cinema & business environments By Rebecca Rivera On May 3, 2017May 3, 2017 In Proyectores Tagged Area, Business, Ceiling, celexon, Cinema, Down, environments, Factor, FORMAT, Gain, Home, Inches, Manual, mounting, Plus, Professional, Projection, Pull, Screen, Viewing, Wall facebook tweet google+