Originally Posted by Joebanjo
Another question for the group: My recently purchased 1976 29 foot rear bath has 3 cast aluminum vent cover housings. I removed and carefully replaced them all with new vent boots and screens as one was beginning to seep water when it rained. I noticed that each Aluminum housing had a small tapped hole near the top opening and wondered if I might be missing a cap of some sort as this might be an attaching point.
Anyone with a clue about these holes might be kind enough to comment.
This forum is a great resource...thanks
The only holes in the sewer vent pipe covers are at the bottom.
There are 6 mounting holes, and 2 drain holes. The drain holes must be facing towards the ground.
Any other holes had to be added by a previous owner, for some reason.