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Stack of white Tyvek tamper-evident envelopes 9 x 12 inches pack of 100

DuPont Tyvek

DuPont Tyvek TYF0912TE Tamper Evident Envelopes 9" x 12" White PK100

SKU CH-0354-G3KD3

White tamper-evident envelopes in a pack of 100 measure nine by twelve inches

  • Product colorWhite
  • Tamper-evident security protects confidential shipments
  • Tyvek material resists tears and moisture in transit
  • 9 x 12 inch size fits standard documents
  • White colour gives a clean professional appearance
  • Pack of 100 envelopes supplies high-volume mailing needs

Tamper-Evident Security

These DuPont Tyvek envelopes protect documents with a tamper-evident seal that shows any unauthorised opening. The white, tear-resistant material suits offices, fulfilment centres and anyone shipping confidential or high-value items. Each pack contains one hundred envelopes measuring nine by twelve inches.

Nine-by-Twelve-Inch Format

The 9 x 12 in. size fits standard letter documents without folding, making it the single dimension that decides whether the envelope matches your paperwork. Choose this pack only when your contents require that exact footprint; smaller or larger pages will need a different envelope.

Lightweight Durability

Tyvek construction resists punctures, moisture and rough handling while adding minimal weight to the shipment. The material stays quiet during packing and does not generate static, so contents slide in cleanly. No special storage conditions are required beyond normal indoor environments.

How it compares

Measured against everything we stock in Packing Materials & Shipping Labels, at today’s prices. Recalculated every night.

Price $134.99
Pricier than about 75% of the 3,067 comparable items (median $52.99).

Specifications

Product
Brand nameTYVEK
Product colorWhite

Questions about this item

How much room does the 9" x 12" size give for documents?

The envelope measures 9 inches by 12 inches, providing space for standard letter or A4 pages folded once or inserted flat without creasing.

Does the tamper-evident seal work with automated mailroom equipment?

The tamper-evident closure is designed to show visible damage if opened, and the smooth Tyvek surface feeds reliably through most inserters and postage meters.

Will a pack of 100 envelopes fit on a standard shelf?

A pack of 100 envelopes is compact and lightweight, easily stored in a desk drawer, on a mailroom shelf, or in a standard office supply cabinet.

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