You can windows that open, just make sure they are not single/double-hung or any kind that slides, as those leak a lot IIRC. Get casement windows, which open o

You can windows that open, just make sure they are not single/double-hung or any kind that slides, as those leak a lot IIRC. Get casement windows, which open on hinges, and that tend to have levers to apply force against a seal/gasket. * https://en.wikipedia.org/wiki/Casement_window https://en.wikipedia.org/wiki/Casement_window