.. knock out plug removal from v/c ? ..

if theres no baffles plates under the hole ull be fine if u buy the proper size for the hole u make baffle gromets i use them with great outcomes .

ive never done it but by the way all the v/c's ive had it seems hard to get a clean cut mine always look like a butcher job like they were this close | | then they went crazy with a file or something all oblong an **** good thing the gromets have a good seal.