Who is our Window Manufacturer

I am trying to find out who our window manufacturer is. The only labels I can find have AMI on it with a gold label AAMA. Two of our windows have staining between the panes. Can anyone help.

Regards

There should be a label somewhere with some numbers.

AMI usually means Associated Materials...i.e. Alside.

+1. They are also sold under the names Revere, Alpine, Preservation, and probably a few more. Most markets have a local Alside branch, so that would probably be the most logical first point of contact.