NEC VT45 Installation Guide

Visual Systems

VT45 Installation Data

Desktop and Ceiling Mount

Rev 1.3

Page

Projection Distance and Screen Size for Ceiling Mount

The following shows the proper relative positions of the projector and screen. Refer to the table to determine the position of
installation.
Distances are in inches. For millimeters multiply by 25.4.

Ceiling Mount Installation

Throw Distance

Vertical Offset

Screen Ctr

4.42"

5.78"

2.96"

Lens Offset from
Mounting Pipe

VT4

Distance Chart

Diagonal

Width (W)

Height (V)

wide - tele

25"

20"

15"

36 - 39"

40"

32"

24"

58" - 64"

60"

48"

36"

87" - 96"

67"

53.6"

40.2"

98" - 108"

72"

57.6"

43.2"

105" - 116"

84"

67.2"

50.4"

123" - 135"

90"

72"

54"

132" - 145"

100"

80"

60"

147" - 161"

120"

96"

72"

176" - 194"

150"

120"

90"

220" - 243"

180"

144"

108"

265" - 292"

210"

168"

126"

309" - 341"

240"

192"

144"

354" - 389"

270"

216"

162"

398" - 438"

300"

240"

180"

443" - 487"

Screen Size (4:3)

Throw Distance

Note: For screen sizes not indicated on the projection tables, use the formulas on page 1.