what is the size?

[risk]

i know most of the guys may have never removed it but i cant get my hands on any at the moment.

when the outter plastic cover has been removed, what is the size of the throat area?

hxxp://cgi.ebay.com/1-DISHPRO-DP-DUAL-LNB-LNBF-DISH-NETWORK-BELL-BEV-PRO-/320667035320?pt=LH_DefaultDomain_0&hash=item4aa93ea6b8

thanks for any help.