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Stack of white vellum booklet envelopes, side seams, box of 500

WESTERN STATES

WESTERN STATES 28# Open Side Booklet Envelopes 92% White Vellum Side Seams Box 500

SKU CH-V3JP-DW3NW

Open side booklet envelopes, 28 lb stock, 92% brightness vellum finish with side seams, box of 500

  • 92% brightness for clear, professional presentation
  • Vellum finish gives a smooth, tactile feel
  • Side seams under construction adds strength
  • 28 lb stock resists tearing in transit
  • Box of 500 covers high-volume mailing needs

28# White Vellum Booklet Envelopes

These 28# envelopes use a vellum finish and 92% brightness white stock for professional mailings. The open side booklet format suits catalogues, annual reports and multi-page inserts. A box of 500 supports high-volume office or mail-room use.

Side seam construction limits

Two side seams under the envelope body create a flat front panel for clean addressing and printing. The seam placement reduces bulk at the centre fold, helping automated inserters feed smoothly. Open side loading still requires contents narrower than the envelope width.

28# paper weight decides suitability

The 28# stock balances stiffness for machine handling with foldability for booklet-style contents. Lighter weights may jam in high-speed inserters; heavier weights increase postage cost and reduce capacity per box. Match the weight to your inserter specifications and postal budget.

Highlights

  • 92% brightness for clear, professional presentation
  • Vellum finish gives a smooth, tactile feel
  • Side seams under construction adds strength
  • 28 lb stock resists tearing in transit
  • Box of 500 covers high-volume mailing needs

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

Should I choose the 28# weight or a lighter option for mailing booklets?

The 28# stock gives a firm feel that protects multi-page booklets in transit, while the vellum finish resists smudging during handling.

How does the 92% brightness look once printed addresses are on the envelope?

At 92% brightness the white surface makes black or colour print stand out clearly, so addresses and barcodes scan reliably on mail-sorting equipment.

What does the open-side, side-seam construction mean for machine inserting?

Open-side loading with two side seams under feeds smoothly through most inserting machines and keeps the flap out of the feed path.

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