JAM Paper Tyvek Envelopes, 9 x 12 Open End, White Airmail, 500 Pack VariesBy:envelope_colour_17838:Assorted|envelope_size_8174:9" x 12"|envelope_pack_size_1000101:500 Pack Construction Duramold robuste résiste aux

Construction Duramold robuste résiste aux égratignures et à l’écaillage

rapports et autres documents

Grâce à leur ouverture latérale

15-mil tear-resistant plastic

JAM Paper Tyvek Envelopes, 9 x 12 Open End, White Airmail, 500 Pack VariesBy:envelope_colour_17838:Assorted|envelope_size_8174:9" x 12"|envelope_pack_size_1000101:500 Pack Construction Duramold robuste résiste auxJAM 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