The old ones were pretty old and didn’t work well so I’m getting new ones installed. It was on the pricier side of things but It’ll be ok, I think. It’s pretty noisy but that’s no issue to me. The fellas are nice and they’re working quicker than I thought they would.
Update: They did a good job and my house doesn’t sound drafty all the time anymore.
I believe they are just the double pane but they’re a big upgrade to the single panes I had which were the originals from the 70s.