Needed Roller assy

A home owner from 90638 says:
I have two patio doors I need to replace the roller assy on. The doors were manufactured by Superior Engineered Products Corp who are no longer in business.
Hope you can help? Thank you
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Dave Sr. from SWISCO responded:

The stainless steel roller 81-173 has a 1-1/4" diameter wheel and the housing is 11/16" wide with a flare width just under 7/8". The 81-174 roller has a wheel diameter of 1-1/8", with a housing width of 5/8" and a flare width of 7/8". Take a look at both to determine which roller housing fits your door best.

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