There are more benefits than just stopping condensation. They help with keeping noise out, and noise in. They aren’t that heavy , on my 5er weight added was 65#. They help cool in summertime and help with keeping warm in fall, spring and winter. Ours is dual pane and darkly tinted. I had them in a 2006 Holiday Rambler Presidential Suite. Had the unit almost 10 years, NEVER had an issue with the windows...nothing went wrong with them, never lost a seal, no condensation between the panes. I won’t own a 5er without them. Weight is a non issue , pros outweight the cons and I’m going on 12 years of having them .
Jim
