Need: Sliding Patio Tandem Roller Door replacement part for U.S. Pat. 3996643 roller

A quick learner from Niles, IL says:
Please confirm if you have a part to replace a 35+ yr. old sliding patio door roller (need two). Would your Part No. 81-149 stainless steel tandem roller work for us? Thanks! Judy

Original Part description:
DEL MAR ROLLER CORP.; U.S. PAT. 3996643. Canada Pending. (see photos)
Our measurements:
Length: 4 1/2; with fins is 6 1/4
Mounting spacing: 5 11/16
Width: 3/4 or 11/16
Wheel Diameter: 1 1/4
Track thickness 1/4
Depth: 1 3/16
User submitted photos of a patio door roller.
Profile picture of Tom
Tom from SWISCO responded:
The 81-149 definitely looks like the closest match we have, or the 81-018 in case you weren't interested in stainless steel. I would just triple check your measurements, they seem to be a little different but only slightly.
A quick learner from Alaska says:
Did this part work? We are looking for the same replacement.
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