Hi Rayland, great question. The distance to the screen base will vary depending on the size of the screen you would like. A 90" screen for example needs to be installed 13.7" above the LPS7T, while a 120" screen needs to be mounted 17.3" above the projector. I hope this helped, thanks. ^Scott
90” 13.7”
95” 14.3”
100” 14.9”
105” 15.5”
110” 16.1”
115 “16.7”
120” 17.3”