Injection molded ABS plastic fairings used to cover hole in airframe where control cables emerge such as the rudder cables at the rear of the fuselage. May be installed on any airframe surface but is most normally used on fabric covered aircraft where they are bonded on with fabric cement and covered with a fabric patch.
I wanted 3 pieces, ended up with 6 not stated they were 2 ea. Not a big deal but.
The height dimension you are looking for is approximately 1-3/16". The unit is shipped closed so you will need to do your own cut out.
Length = 5" / Width (Middle) = 1-3/8"
The fairing at the widest point has an ID of 0.40" and at the smallest width is 0.35".