Quick overview from the supplier:
Manual Screen 16:9 EliteScreens HT Premium, 251x195cm/243x137cm view area, BB, 1.1gain,M110HTSR2-E20
: Manual HT 16:9 projector screen for high-end commercial or home cinema applications.
-MaxWhite® FG. This 1.1 Gain,
-20” (51cm) top drop border;
-4K Ultra HD Ready, Active 3D ready, Greenguard, HDR Ready, NFPA, SlowRM System,
-White Case.