[afterburn 549]

Looking for insulated window covering.
Almost a quilt.
Years ago, I was in this home that had a very special picture window coverings.
It was very well made, had some sort of track that held it all in place.
This way, it could be raised or lowered and not have to be fussed with.
It was all held snug against the framework.
I have looked through the internet all over, and must not be using the correct nomenclature?
If the brain trust knows of some sort of real inside window covering that could be opened and closed, is insulated really well, please do tell.
Please, nothing with poles and stuff that fits loosely.
Thanx in advance.