Here is something that needs to be in the public domain:
This is the ELK-SP12F speaker that fits in the back box for the ELK-M1KP2 keypad
I used 4 #4 x 1/4" screws to mount the speaker in the back box. Plus I had to trim the speaker opening a little.
And here are a couple of photos showing the back box and the speaker in the back box.
This is the ELK-SP12F speaker that fits in the back box for the ELK-M1KP2 keypad
I used 4 #4 x 1/4" screws to mount the speaker in the back box. Plus I had to trim the speaker opening a little.
And here are a couple of photos showing the back box and the speaker in the back box.

