A quick learner from Jefferson city, mo 65101 says:
April 9, 2021
Mount has app 5 degree angle from square, where the side slide fits into the mount. G 6600!is marked on the white nylonish mount These are in a 25 year old set of cabinets
Tom from SWISCO responded:
April 13, 2021
Please see our 32-119 drawer socket. I think this may be your best bet, but look it over and tell me if you had any questions.