\rHi TJ:
None of our Wall Plates have Id numbers. But you the WP stands for Wall Plate and the 12 refers to the number of channels, 6 Red stripped; the Positives and 6 black stripped; the Negatives. So the first five pairs would be five channels Left, Center, Right, Left Surround and the Right surround. The 6th pair are identical to the other 5 pair. So unless you are using a passive sub woofer it will not work for signal level connections found on Powered Sub woofers. At least most of them are signal (low ) level inputs. Some do have speaker (high) level as an option and the 6th pair can be used for the sub. So no matter which wall plate you pick up you just have to count the number of connections so a WP has four connectors, WP8 has 8 connectors..
I hope that makes sense.
TL/4622\r