Here are the measurements of the inside can:
Height 11 inches
Width 6 1/4 inches
Length 16 inches
Note that there is a slight tapering at the bottom of the can, for a lot of mobile radios this should not be a problem, but you will want to measure your radio's length to make sure if is under 11 inches and still will allow you to have your coax connected to the back of the radio.
You should also note that you will loose an inch of height to allow for the face plate of the radio, the real height is 10 inches.