thank you for your reply all my windows and padio doors have air that comes though where the sliders meet. they have an inch of ice on the inside of the glass(outside of the interior glass,i then have water on my floor or carpet) and vinyle. when i slide up my windows they have so much play in them its hard to slide them straight up and down. when the wind blows the whole window rattles in its frame,padio doors also.i turely beleive there are no seals in these windows and doors. those plastic H divders (not sure what you call them) inbetween the window rattle when the wind blows,so i beleive there is no gas inbetween these windows and doors. thank you for your time