NEC Display Solutions of America, Inc.
UM361X, UM351W & UM352W Installation Guide
Desktop and Ceiling Mount v1.0
www.necdisplay.com UM361X, UM351W, UM352W Page 2 of 8
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-13.52
B = 0.4229W+4.174
C = 0.360W
D = 0.1104W+4.174
Distance Chart for Popular 16:10 Screen Sizes
Note: For screen sizes not indicated in the distance charts, use the formulas on page 1.
Diagonal Width Height
inch inch inch inch inch inch inch
58.0 49 31 4.19 24.97 17.71 9.60
60.0 51 32 4.80 25.69 18.32 9.79
65.0 55 34 6.32 27.48 19.84 10.26
70.0 59 37 7.85 29.28 21.37 10.73
75.0 64 40 9.38 31.07 22.90 11.20
80.0 68 42 10.90 32.86 24.42 11.66
85.0 72 45 12.43 34.66 25.95 12.13
90.0 76 48 13.96 36.45 27.48 12.60
95.0 81 50 15.48 38.24 29.00 13.07
100.0 85 53 17.01 40.04 30.53 13.54
105.0 89 56 18.53 41.83 32.05 14.00
110.0 93 58 20.06 43.62 33.58 14.47
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