Ha! I gotta laugh at this one. Seems the previous owner went crazy with cutting giant hole for the main
electrical cord to exit the trailer through on my camper. After much searching to find the right size and shape housing or little door to cover this butcher job, I found none. So I bought one of those 99 cent flat tub stoppers. Cut it to fit, then cross cut the center and glued it on with 3m auto trim glue. Works like a charm!