We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Box of 500 bright white 6x9 open side booklet envelopes

WESTERN STATES

WESTERN STATES 6x9 Open Side Booklet Envelopes 24# Bright White 96% Acid Free 500/Box

SKU CH-6SB5-CZB78

Bright white 24# sulphite envelopes with vellum finish, acid-free and SFI certified, 500 per box

  • Bright white 96% brightness for crisp prints
  • Acid-free sulphite paper preserves documents long-term
  • SFI-certified fibre supports responsible forestry
  • Open-side 6 x 9 design speeds bulk mailing
  • Side-seam construction adds strength for heavy inserts

6 x 9 inch open-side booklet envelopes

These envelopes measure six by nine inches and open on the long side for easy document insertion. The bright white sulphite stock carries a 96 percent brightness rating and a vellum imaging finish for clean print results. Acid-free construction protects contents from yellowing over time. Each box contains five hundred envelopes suitable for office mailing and filing.

24 lb paper weight and side-seam construction

The 24 pound sulphite paper provides a substantial feel while remaining compatible with standard desktop printers and copiers. Side seams run the full height of the envelope for added strength during handling. A remoistening seal on the flap down closure secures contents without tape or adhesives. The SFI certified stock meets responsible forestry standards for sustainable sourcing.

Box of 500 with bulk carton option

Each box weighs eleven pounds and holds five hundred envelopes for high-volume mailing tasks. Cartons contain twenty-five hundred envelopes across five boxes for larger operations. The vellum finish accepts both laser and inkjet output without smudging. Buyers who need window envelopes or different dimensions should select an alternative product.

Highlights

  • Bright white 96% brightness for crisp prints
  • Acid-free sulphite paper preserves documents long-term
  • SFI-certified fibre supports responsible forestry
  • Open-side 6 x 9 design speeds bulk mailing
  • Side-seam construction adds strength for heavy inserts

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

How do I seal the remoistening flap without it sticking prematurely?

Keep the flap dry until you are ready to close the envelope; moisture from fingers or humid air can activate the adhesive early.

Will the 24# sulphite paper yellow or become brittle over time?

The acid-free stock is designed to resist yellowing and brittleness under normal storage conditions.

At what point does the vellum imaging finish start to show toner offset during a long print run?

Offset typically appears once the paper surface saturates with toner, which varies by printer model and coverage density.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.