a/c drain from a/c box

[homemade87]

I have been driving my 82 some and have noticed when I run the air the condensed water from the a/c box is dumping on the inner fender and running out the bottom all over the place on the body . I know this will eventually create rust. When I did my resto I never thought about the drain . I can feel a hole in the bottom where I think it is coming from the a/c box . I looked on lmc and did not see anything . Does any one have some info on where the drain is supposed to drain and if there is a rubber grommet or something I am suppose to have .