Nextel comm IR1200 - Manual (Page 23)

Installation Preparation
RFM-4200-5015 Rev1 15
The following diagram outlines the modem’s dimensions:
NOTE: This diagram depicts the dimensions of both the iR1200 Rugged
and iR1200 GPS-Enabled Modems and should not be used as a
template for mounting the modem.
Figure 4 – Dimensions of iR1200 GPS-Enabled Modem