How to compare 81-047 to my Disco 1119

Thanks for contacting us. Our 81-047 sliding door roller assembly is the Disco 1119 roller. From the top of the housing to the top of the flare is 7/8", the flare appears to be 5/16" and below the flare is 1/4". The complete width of the roller with flares is 7/8" wide. I hope this has answered your question.