Probably circa 1960's

A home owner from Nebraska says:
Can you please advise what roller replacement is needed. This is the front door. Thanks!
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Casey from SWISCO responded:

Hello,

Take a look at our 23-009 and 23-010 rollers with 3/4" diameter wheels. Normally you would use our 23-009 on the front and the 23-010 on the rear. 

We would like for you to compare your rollers to ours see if they match. If not, you may need to replace the original hardware with our 23-500 or wider track kit. Thanks for posting! 

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