Flexible Magnetic Strip Insert For Fully Framed Swing Shower Doors Can be used on the shower door frame or door jamb only in CONJUNCTION with another magnet of an opposite polarity on the opposite side. For that the grooves MUST be positioned opposite to each other. If purchasing only one magnet for one side and keeping your own manget on the other side, make sure YOUR magnet has polarity - which means your magnet does have the groove. If it does not - this item is NOT for your application. Width: 5/16" Thickness: 5/32" Length: 75" Color: Dark Bronze One per package