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Box of 500 bright white 9 x 12 inch open side booklet envelopes

WESTERN STATES

WESTERN STATES Open Side Booklet Envelope 9 x 12 24# Bright White 500

SKU CH-W4BY-6Q41D

Bright white 9 x 12 open-side booklet envelopes, 24 lb sulphite paper with 96% brightness, acid-free vellum finish, side seams and remoistening seal, 500 per box

  • Bright 96% white paper for crisp prints
  • SFI certified sulphite from responsible sources
  • Acid-free stock protects documents over time
  • Open-side 9 x 12 format speeds bulk mailing
  • Vellum finish gives smooth laser feed

Product Identity

These open-side booklet envelopes measure 9 by 12 inches and use 24# bright white sulphite paper with a vellum imaging finish. Each box contains 500 envelopes that are acid free and SFI certified. The side-seam construction and remoistening seal suit high-volume mailing and professional correspondence.

Suited For

Offices and organisations that need a clean, bright white surface for laser or inkjet printing on bulk mailings will find the 96% brightness and vellum finish reliable. The 500-count box supports large campaigns without frequent reordering. Buyers who require a window, a different paper colour or a smaller pack size should look at other options.

Capacity And Headroom

The 500-envelope quantity handles monthly statement runs, direct-mail campaigns or daily office correspondence with comfortable headroom. The 24# stock feeds smoothly through most desktop printers and copiers. Very high-speed inserters or applications needing heavier weight paper may reach the limits of this specification.

Highlights

  • Bright 96% white paper for crisp prints
  • SFI certified sulphite from responsible sources
  • Acid-free stock protects documents over time
  • Open-side 9 x 12 format speeds bulk mailing
  • Vellum finish gives smooth laser feed

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

What paper weight and size must my printer handle to run these 24# 9 x 12 envelopes through it?

The envelopes are 24# stock measuring 9 by 12 inches, so your printer needs to accept that weight and dimension without jamming.

Will the Vellum Imaging Finish and 96% Brightness still match my existing Bright White letterhead if I keep using it?

Yes, the 96% Brightness and Vellum Imaging Finish are designed for consistent colour reproduction alongside standard Bright White stationery.

How can I confirm the side seams and remoistening seal are holding properly after I load the first box?

Run a test batch — check that each envelope seals cleanly when moistened and that the side seams show no splitting or adhesive bleed.

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