The viewable surface area of a 138 inch diagonal UST ALR (Ambient Light Rejecting) projection screen will measure approximately 120.3 inches wide and 67.7 inches high. The ideal viewing distance from your eyes while seated to the screen’s surface is within the range of 13.8 to 20.7 feet depending on the types of content you watch and how immersive you want the viewing experience to be.
138″ Lenticular “Cinematic” Wall-Mount Fixed-Frame UST ALR Screen
The Elite Screens AR138H-CLR5 138″ Aeon CLR 5 Series Edge-Free projection screen utilizes StarBright CLR 5 screen material with 0.8 gain, 80% ceiling ambient light resistance, and 170° viewing angle. Frame bezel 0.4″. After assembly, the screen dimensions are 121.1″ wide, 68.5″ high, 1.3″ deep, and it weighs 30 pounds. Buy at Amazon.com or directly from Elite Screens.