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Are EcoEnclose products available for wholesale?
EcoEnclose is a manufacturer and distributor selling primarily business to business. Because of the uniqueness of our product line, we are asked very often if we sell or have a wholesale price list
USPS Size guidelines
http://pe.usps.com/text/dmm300/101.htm 1.0 Physical Standards for Letters 1.1 Dimensional Standards for Letters Letter-size mail is: a. Min 5 x 3.5 x .007" - For 6 x 4.5" + min is 0.009" b. Max 11.5