Starting from the front, the 1.6:1 motorized zoom lens is offset to the right (if you are facing the projector). To fill a 100" diagaonal 16:9 screen, you may place the front of the projector as close as 10 feet 3 inches and as far back as 16 feet 5 inches, providing plenty of placement flexibility.There are two drop down feet, at the left and right bottom of the projector. There is also an infrared sensor, near the left foot.
There, you will find a larger button for power, and to its right eight buttons some doing double duty. In the middle of the cluster is the Enter button surrounded by the four arrow key buttons. The left arrow button doubles to select between HDMI and DVI inputs, the right arrow button toggles between video sources. There is also a Menu button (bottom left). On the top right is a button to adjust lens shift, and bottom right one for zoom and focus.
On the left side of the projector (looking from the rear) you will find the air filter (the manual suggests cleaning about once a month), and on the right side, the door for the lamp system. As a result, those ceiling mounting, will not need to unmount the projector to change the lamp, unlike many home theater projectors with the lamp door on the bottom of the projector.