Guardian sliding glass door rollers

A quick learner from Belmont Ca. says:
Hi Folks, the existing rollers measure .750 X 3.075 and have 1.250 Dia rollers. I did order the Swisco part # 81-138. They do not fit into the channel, the rivit hinge is wader then .750. I would like to return those for the correct ones. The original rollers have a partially raised frame where the 81-138 are flat across the top or the side that meet the door. Your help will be greatly appreciated.
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Casey from SWISCO responded:

Hello,

I agree that your roller has some notable differences to the 81-138 that you purchased. You can view our return policy here. Take a look at the rollers we've related for you, starting with the 81-167, to see if the style and dimensions could be a match to yours. Thanks for posting! 

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