SSBM 500 Clear Reclosable Poly Bags 12"x15" 4 Mil Top Seal Resealable Plastic Zipper Baggies

Reason average rating, have done this before, perhaps industry standard on measurement is to measure two sides of bag is define or specified for description, not one side .. Been there done that, will possible return if I can't find thick 4 mil bags that come close to 0.004. Obviously, I expect to pay at least 2 times the price. Same "Quality?" as when I order 4 Mil (see below) years ago from another source. Bags measure 0.002395 inches (i.e., 2.395 Mils) , not 0.004(4 Mils). Test method use, folded bottom of bag so measure 8 layers., measured 0.19") 0.19 divided by 8 is 0.02395 I use a micrometer to measure thickness, 0.02395" additional Information, Great Value (Wal Mart Brand) Freezer Bags (1 Gallon) 0.001375 (1.3 Mils) " " " " " Storage Bags (1 Gallon) 0.001125 (1.1 Mils) The following is a cut and paste on definition and uses. A grocery store bag is 0.5 mil A dry cleaning bag is 0.75 mil A bread bag is 1.5 mils thick A freezer bags is generally 1.75 mils A retail shopping bag is usually 2 mils Mils are sometimes listed in decimal as thousands of an inch; a 2 mil bag may be listed as .002. To convert the decimal to actual mils, simply shift the decimal over by three, .004 to 4 mils. Choosing the Right Mil Thickness How thick of a mil needed is dependent on the application. If you're product is heavy or has sharp corners, it would be a wiser choice to go with a heavier gauge than lighter. Vice versa, you would not want to place food items; fruits, vegetables, etc in a 6 mil bag. Keep in mind that the clarity of a bag is affected by the thickness. A 4 mil bag would not be a clear as a 1 mil bag. Suggested uses: 1 MIL - Economical short term storage. 1.5 MIL - Lightweight protection from dirt and moisture. 2 MIL - Protection for shipping and storage. 3 MIL - Additional protection for hardware, nuts, bolts and industrial parts. 4 MIL - Heavy duty protection when packaging nails, screws