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What are knockouts in the floor used for?
I have a 1956 Chevy 210 Sedan with what appear to be 1" x 3" oval-shaped knockouts in the floor below the door sills, just outside the channel where the electrical wires run. I found them after removing globs of old caulk used to seal them. Any idea why they are there and what they are/were used for?
November 19, 2011
I believe that they are removable condensation/debris seals there should be more of the same on the underside of the chasis.???
sources: my 1968 mercury cougar has these in various locations in bottom of chasis
January 15, 2012