We have seen the rest ... but these are the best document holders on the market. The perfect enhancement to your 5S protocol ... these holders help create and sustain a professional looking work environment. Get rid of the taped signs scattered around your facility. Once you begin to use them you will never revert back to laminating documents or using the flimsy traditional sheet protectors. Once you place the document into the protector "Pocket" sleeve and slide it into the track the document becomes sealed. It is easy to replace the document by removing the sleeve from the track. The track comes with an adhesive strip for permanent mounting or can be attached to a magnet strip for use directly onto metal or our Report-Out board. --- While placing an order first dimension should be the Width followed by the Height.---