upper foam panel has 1x3" screwed on handlelower panel is held in place by horizontal elastic
2 vertical elastics hold upper panel in place & allow for easily lowering the upper panel to let light in. easy as pulling a windowshade. upper panel lands on lower panel,elastics hold it in place until raised so to insulate upper windowpane.
both panels can be easily removed.
curtains,when not pulled back, hide vertical elastics
