Need new casters

A quick learner from Los Angeles says:
September 20, 2017
Hi. I've attached photos of the caster that I need to repair my sliding glass doors. These are on a boat...1971 Grand Banks Laguna. I don't see any markings on the part. Can you please help me identify it? I'll need 6 of these.

I have images of it installed into the door, also but I can only upload 5 images.

Thank you so much. Please contact me at leonw2@hotmail.com or 323-440-4734

Best,
Leon
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Paul from SWISCO responded:
September 25, 2017
Thanks for choosing SWISCO.com. From your photos and dimensions, it looks like our 81-027 roller assembly could be what you need. Compare our measurements to yours and let us know if it could be a match.
Sliding Door Roller Assembly, 1-1/4" Concave BB Wheel
Sliding Door Roller Assembly, 1-1/4" Concave BB Wheel
81-027
$8.45
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