JAM Paper Tyvek Envelopes , #10, 4 1/8 x 9 1/2, White, 50 Pack VariesBy:envelope_colour_17838:White|envelope_size_8174:4-1/8" x 9-1/2"|envelope_pack_size_1000101:50 Pack Great for industrial and construction

Great for industrial and construction applications

If you're going for style and sophistication with your next invitation mailing endeavor

elles sont idéales pour les lettres commerciales et les feuilles de papier standard pliées en trois

To keep enclosed items secure as they travel through the office or the mail

An even total of 100 envelopes are contained in this pack

JAM Paper Tyvek Envelopes , #10, 4 1/8 x 9 1/2, White, 50 Pack VariesBy:envelope_colour_17838:White|envelope_size_8174:4-1/8" x 9-1/2"|envelope_pack_size_1000101:50 Pack Great for industrial and constructionJAM Paper Heavy Duty Tyvek Envelopes are some of the strongest and sturdiest envelopes available. Tyvek is a registered trademark of DuPont, the established chemical company responsible for developing this durable polymer. Tyvek is composed of high density polyethylene fibers, a synthetic material that is extremely hard to rip and tear. This type of material is the same used to build and insulate houses, so you can be assured the materials inside