sliding glass door rollers

A home owner from nashville, tn says:
I have identified your part #81-279 as the rollers in my sliding glass door which has a 1-1/4" dia. wheel. But I have noticed that you recommended your part #81-278, which has a 1-1/2" dia. wheel, to someone as a replacement for the part that has the 1-1/4" wheel. Before I place my order, is there any reason for using the larger wheel?
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Paul from SWISCO responded:
If you have 1-1/4" diameter wheel, and the housing dimensions match, then we definitely recommend the 81-279.
A home owner from nashville, tn says:
In response to your recommendation, I ordered 2 patio roller assemblies 1-1/4", your part #81-279 along with 2 recommended Phillips pan 1/4 x 20 ss machine screws, your part #33-104. The machine screws were too short to connect to the roller assemblies and it was necessary to use the old screws that I removed from the door. Luckily , I had not disposed of the old screws. The threads on the new screws were only 3/4" long and needed to be 1". Just thought you should know about this.
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Tom from SWISCO responded:
Great! Thanks for confirming, I'm sure that will help other customers in the future. Thanks for your business and let me know if you have any questions in the future, we will do our best to help.
A professional from CA says:
When using this type of roller, I have needed anything from 1/4" to 3" screws. It all depends on what the manufacturer designed. The best bet is to unscrew it and check before ordering. Also, opposite ends often use different lengths on the same door.
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