Sounds like there is a little cornfusion about which cover we're
discussing here. The dust cover that Tim is referring to is this one:
http://www.pbase.com/dennygraham/986771_radio_truck&page=all The 3700350 radio grill screen used with the
installation of the radio was simply a fine black
starched screen cloth. A vehicle without a radio had
a black paper sheet behind the outer grill to hide
the hole. This is what is pictured from the '50
passenger car in Lonnie's tip for using construction
paper. It is about as close as you can get if you're
not installing a radio.
If the solid paper sheet were left in when the radio
was installed, it would mute the speaker and probably
buzz at certain frequencies and volumes. The speaker
has to breathe thru the speaker grill cloth.
Denny Graham
Sandwich, IL
