single roller sliding door

A quick learner from Californina says:
Hi, I just installed parts for another slider I got from swisco. Amazing. Now I want to do all the doors. Unfortunately, different brands. The one I need now is similar to 81-148.. Mine has a notch near the tab, otherwise seems very similar. 1 1/8" steel wheel, 2 1/4" body, 3/4" width. The tab appear a bit longer at 3/4" than 81-148 but I don't see this dimension. The notch in mine does not engage with frame and appears that it would fit even without this notch. Thoughts?
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Bob from SWISCO responded:

Thanks for posting. Is the height of your roller also 1-1/4"? If so, given the appearance and matching width, I'm pretty confident the 81-148 is our best bet for you. I don't think the slight difference in the tab will be an issue. 

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