| The above is our set standards, we display with every single item the products thickness in micron as well as Mil (see Quality listing under each item).
It should also be noticed that manufacture or re-sellers display the products thickness in Mil with only one digit and then round the numbers up. Mil being a fairly rough unit of measurement for something as thin as sheet protectors can easily be rounded up to display a more favorable material thickness. Where micron being 10.000 parts per centimeter or app. 2-1/2 time smaller than 1 inch is a much more accurate term for measurement but being a metric term we have never had a tradition for using this measurement perhaps with the exception of within certain industries and with the NASA space program.
The above standards in the diagram are used more or less by most major manufactures with in +/- 5 micron or so. However for a super heavy weight sheet protector 5 micron is so little that most people can not feel the difference. However 5 microns difference between a standard weight and economy weight sheet protectors makes a lot more difference as the products stiffness is lost and the sheet protector becomes less handy to work with.
DON'T WANT TO GET CHEATED ?
Look at the product shipping weight. If it say 1.66Lb per 100 sheets you have a good Standard Weight sheet protector but is the weight listed as 1.70 Lb for 100 Heavy Weight sheet protectors and perhaps listed as a "special polypropylene mix" or similar "salesy" words we would recommend that you check twice and get an actual measurement of the material thickness before you make your purchase.
In today competitive world where even the biggest brand name manufactures fights to "get the sale" the consumer is easily forgotten and the old ethics of selling a good descent product at a fair price. As always there are a connection between price and quality and if the deal look too good to be true you may be better off in the long run to take your business somewhere else. Remember: Only serious manufactures and dealers list material thickness.
If you want to know more also in reference to what quality of holder or protector to choose then take a look at the linked page below it feature our recommendations for quality and choice and: What Sheet Protector Weight Should I Choose ?
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