Sliding window roller width

A home owner from NM says:
The top of the 87-084 housing is 1/4" wide, but it flares out at the bottom. What is the width of the bottom of the housing?
Profile picture of Paul Sr.
Paul Sr. from SWISCO responded:
The bottom of the housing of the 87-084 roller does flare out slightly but that is to create a tight fit when the roller is installed into the window extrusion.
Profile for the 87-084 replacement window roller.
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