ALENCO SLIDING GLASS DOOR ROLLER REPLACEMENT-

Thank you for contacting us. It looks like you're showing two patio door roller assemblies in image 0131. The one on the left looks like our 81-032B and the other with two pieces resembles the 81-023. Review the dimensions and compare them with yours to see how they match up. 

Alternate image for 81-023

Detail of 81-032B

Profile view of 81-032B