Obscure patio door rollers

A home owner from USA says:
September 15, 2014
I am looking for four patio door rollers for my wood frame, screen door. (It only uses two, but if I can find replacements, I'll get some spares!)

Here are the parameters:

My space into which they go is 5/8" wide, 1 1/8" deep, and 2" Long.

The current rollers have a 7/8" concave wheel. The housing is 1/2" wide at widest point and 3/4" high.

I attached a picture.

Do you have anything close or a suggestion?

Thanks Jef
User submitted a photo of a patio door roller.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
September 16, 2014
Thanks for posting, Jef. Looking at your photo, it appears that the roller was replaced some time ago. Take a look at our 81-247 and see if you can use this.
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