Hi Dave,
There's a good chance that we carry the operator you need but we'll need to see a picture of your operator removed or with the window open so that we can compare the arms of your operator to our replacements. Unfortunately, our part numbers are different from Silverline's, so we can't use their numbers to cross-reference the part. Thank you!
Bought casement windows several years ago from I believe Home Depot, one of the crank-arms had broken and Silverline sent me a replacement operator, now another has broken.
Silverline told me that I have 7500 Silverline windows and the replacement that they had originally sent me back in 2011 was a Roto Operator, part # 07-0P05-7553-03, they no longer carry this item and they referred your place as a possible source for a replacement operator.
Thanks, Dave
