Standard size electrical knock out holes are 7/8", 1-1/8", 1-3/8" (for 1/2", 3/4" & 1" conduit).

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1952 Willys M38 Army Jeep
1983 Jeep CJ7 Laredo
1984 Jeep CJ7
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Silver Spring, MD