NEC Display Solutions of America, Inc.
U321H Installation Guide
Desktop and Ceiling Mount
v1.0
www.necdisplay.com
U321H
Page 2 of 9
Ceiling Mounted Installation
The following diagram shows the relationship between projector position and the screen. Refer to the charts below for data.
Distances are in inches. For millimeters multiply by 25.4.
Projection Formulas:
A
= C-10.00
B
= 0.365W
C
= 0.252W
D
= 0.0835W
Distance Chart for Popular 16:9 Screen Sizes
Note:
For screen sizes not indicated in the distance charts, use the formulas on page 1.
Diagonal Width(W) Height (H)
inches
inches
inches
inches
85
74
42
9
90
78
44
10
95
83
47
11
100
87
49
12
27
29
30
32
6.2
6.5
6.9
7.3
Screen Size (16:9)
19
inches
A
B
inches
20
21
22
inches
C
D
A
D
B
C
