I think the three circle holes are sharp punchouts with teeth embedded into the timber @barydos. They hold the saw-tooth fitting to the backing board. ...

That's it, @barydos. Sorry, I didn't notice they were pressed flat. The only other option would be to use two of the keyhole fixings and hanging hooks ...

Hi @barydos, You might like to check out this helpful guide: How to hang just about anything. The easiest and least invasive method of hanging this ...

Hi @barydos, Just to let you know, this is considered plumbing work, requiring a licensed plumber. The plumber would likely reconnect the breech und ...

No, it's not good practice to go whacking away on a socket @barydos. But, using it to tap a Dynabolt into a correctly-sized hole shouldn't be an issue ...

So glad you resolved the issue @barydos, and many thanks for updating us with the solution. Well done. Mitchell

Oh, so sorry @barydos. I presumed you meant the inside sloped wall was preventing the bolt from being driven home as it was contacting it. Now I see y ...

That's not a silly question at all, @barydos. In fact, I've sat here for five minutes trying to think of what the issue would be. Just to confirm w ...