Rollers for Del Mar Engineering patio door, circa 1969

A home owner from Encino, California says:
Hello. My patio door rollers say "Del Mar Eng" "Long Beach Cal" "Pat Pend" I don't find any other identifying numbers or markings. The wheel outer diameter is 1.106", the inner 0.836", the width measuring 0.316".

I've attached photos with rulers and caliper measurements, I hope this is helpful. Thank you in advance, for helping identify these parts.
Thumbnail of the uploaded file named 20221215_143541.jpg
Thumbnail of the uploaded file named 20221215_143552.jpg
Thumbnail of the uploaded file named 20221215_143606.jpg
Thumbnail of the uploaded file named 20221215_145504.jpg
Thumbnail of the uploaded file named calipers.jpg
Profile picture of Emily
Emily from SWISCO responded:

Hi there!

Thank you for reaching out to us. Our 81-148 roller assembly was the first to come to mind but take a look at the specifications and see how they match up with your old hardware. 

Alternate image for 81-148
Alternate image for 81-148

How to identify patio door rollers
How to identify patio door rollers
VIDEO
WATCH >
How to Replace a Patio Sliding Glass Door Roller [1080p]
How to Replace a Patio Sliding Glass Door Roller [1080p]
VIDEO
WATCH >
How to maintain a sliding glass door
How to maintain a sliding glass door
GUIDE
READ >
How to replace a sliding glass door roller
How to replace a sliding glass door roller
GUIDE
READ >
Identifying the right replacement roller for your sliding glass door
Identifying the right replacement roller for your sliding glass door
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.