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White Tyvek booklet envelope 12 x 16 inches smooth finish expansion flap down center seam box of 100

WESTERN STATES

WESTERN STATES Open Side Expansion Tyvek Booklet Envelope 12 x 16 18# White Box of 100

SKU CH-ZAQC-JQSPF

Bright white Tyvek booklet envelopes with expansion gusset and moisture-resistant Kwik-Tak seal hold bulky documents

  • Tyvek construction resists water and bursting
  • Expansion gusset holds bulky documents up to 2 inches thick
  • Pressure-sensitive Kwik-Tak seal closes fast without moisture
  • Bright white smooth finish gives a clean professional look
  • Box of 100 envelopes supplies high-volume mailing needs

Large-format Tyvek envelope

These white spun-bonded olefin envelopes measure 12 by 16 inches with a two-inch expansion gusset. They arrive new in a box of 100 and use a pressure-sensitive Kwik-Tak seal. The open-side design and centre seam suit booklet-style contents that need extra thickness capacity.

Build integration

No window means the full face is available for labels or printing. The 18-pound Tyvek material resists moisture and bursting, so it protects documents during handling without adding rigid packaging bulk. The flap-down closure requires no separate tape or glue, freeing up packing time.

Sustained load behaviour

Under repeated mailing cycles the spun-bonded fibres maintain tear resistance and do not degrade like standard paper. The expansion gusset holds its shape when filled to capacity, preventing seam stress. Moisture resistance remains effective across varied storage conditions.

Highlights

  • Tyvek construction resists water and bursting
  • Expansion gusset holds bulky documents up to 2 inches thick
  • Pressure-sensitive Kwik-Tak seal closes fast without moisture
  • Bright white smooth finish gives a clean professional look
  • Box of 100 envelopes supplies high-volume mailing needs

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

How much expansion depth does the 12" x 16" envelope provide for bulky documents?

The envelope measures 12" x 16" x 2", giving a 2-inch expansion gusset that accommodates thick booklets or catalogues.

Will the Tyvek material and Kwik-Tak seal hold up to daily mailing without tearing or moisture damage?

Spun-bonded olefin Tyvek resists water and bursting, while the pressure-sensitive Kwik-Tak flap creates a secure, tamper-evident closure.

What sealing method does the envelope use so I know whether I need extra adhesive?

A built-in Kwik-Tak pressure-sensitive strip seals on contact — no tape, glue or moistener required.

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