Better-Bilt dual-pane sliding window roller

A quick learner from Lake Havasu City, AZ says:
November 16, 2017
I received my 87-188 rollers today, and it looks like I guessed wrong on the fit from the pictures. These plastic frames are smaller than the frames from my Better-Bilt dual-pane sliding windows. My fault, but do you have another model that is larger and might fit?

I've enclosed a picture of your 87-188 and one of my sliders. I was hoping to go to nylon as the brass has become very noisy on some windows, and my plastic housings are a bit cracked. The house was built in 1994, so the windows are likely from that era.
roller
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Tom from SWISCO responded:
November 21, 2017
At first glance, your original roller looks much closer to our 87-181. However I'm not sure what your specific dimensions are. I recommend going over our measurements to determine if the 87-181 would be a better match.

I'm afraid we don't have a version of this roller with nylon wheels.
A quick learner from Lake Havasu says:
November 21, 2017
This is a busy week, but I think I will try to get the wrong ones sent back and try a pair of the 87-181s. I have an unbranded heavy sliding glass door that needs help as well. Looks like I'll have to take it apart and send pictures to be safe. Then I can order both at the same time.
Tandem Roller Assembly
Tandem Roller Assembly
87-181
$3.55
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