A quick learner says:
February 1, 2010
Dear Sir/Madam, I have taken a picture of sliding door roller of the closet and the number is 20121 ..sad to say it didnt say anything about the brand...when i browse into your selection. It seems to be the same as 23-196?
Paul Sr. from SWISCO responded:
February 4, 2010
The 23-196 replacement roller assembly was used by a company named Acme and later Stanley.