Don't guess - measure! If you have an electrical or antenna box on the wall, open the outlet, pull the device aside, and measure depth to the back wall. If you don't have a box, drill a small pilot hole in the wall, just going through the wall, say 1/2". Then insert a straight, stiff wire, perhaps coat hanger, to feel through to the back wall. You'll hear the distinctive tap of metal to metal.
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Marty and Martha
2015 Z-1 211RD
2012 Nissan Titan
Dalzell SC
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