There are no restrictions as to method of application of the return address; only the requirement that a complete government agency return address be placed above the words official business and penalty statement
An envelope, usually made of a paper product. The face may be plain or preprinted with or without an open or glassine address window. The closure may be a gummed flap or a button and string fastener. When required a smaller envelope may be glued on the right face of the larger envelope. The interior may have a printed opaquing design and/or contain chipboard insert(s). It is designed for mailing correspondence/letters; records, or exposed and developed radiographic film. Excludes envelope, photographic negative; envelope, radiographic film mount, dental; and envelope, transparent.
Classification: Envelopes of paper or paperboard, of a kind used in correspondence
NSN 6105-01-025-5981
NSN 5999-01-272-8968
NSN 5915-01-251-4986
NSN 5950-01-594-2401
NSN 7035-01-019-3951
NSN 5895-01-044-3201
NSN 5895-01-548-5728
NSN 6320-01-397-0399
NSN 6220-01-212-4088
NSN 5920-01-069-0270
NSN 5925-00-905-1767
NSN 6620-01-036-6687