Request info on Tandem roller unit for BetterBilt slider window of 1991 vintage.
A quick learner from Oro Valley, AZ says:
March 25, 2016
No stamps or part numbers shown on unit
Paul from SWISCO responded:
March 28, 2016
Please see our 87-181 tandem window roller. This has been known to work in some Better Bilt sliding windows, but review our information and see if you can get this to work.