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White sulphite catalog envelopes, vellum finish, center seam, self-seal flaps, box of 500

WESTERN STATES

WESTERN STATES Open End Catalog Envelopes 6x9 28# White Self-Seal Box 500

SKU CH-E66R-M671Z

White sulphite catalog envelopes with self-sealing latex adhesive hold 6 by 9 inch contents and ship flat in a 500-count box weighing 11.5 lbs

  • SFI certified paper supports responsible forestry
  • 92% brightness gives documents a clean professional look
  • Vellum finish provides a smooth writing surface
  • Self-seal latex adhesive closes securely without moisture
  • 500 envelopes per box keeps mailroom stocked

Open End Catalog Envelopes

These open-end catalog envelopes measure 6 by 9 inches and use 28 lb white sulphite paper with a vellum finish. They are SFI certified and rated at 92 percent brightness for a clean, professional appearance. A center seam adds strength while the extended flap provides a larger sealing surface. Each box contains 500 envelopes and weighs 11.5 lbs.

Self-Sealing Latex Adhesive

The Pres-Stik latex adhesive creates a secure seal without moisture, replacing traditional gummed flaps that require wetting or separate tape. This speeds up high-volume mail preparation and eliminates the mess of dampeners or glue sticks. The jump is worth it when daily mailing volume makes manual sealing a bottleneck. Buyers who need tamper-evident security features or water-activated adhesion for archival requirements will not find those here.

Capacity and Headroom

A single box of 500 envelopes supports extended mailing runs for invoices, catalogues or promotional inserts without frequent reordering. The 28 lb stock handles multi-page documents and lightweight brochures while keeping postage costs predictable. It runs out when shipments exceed the 6 by 9 inch format or require padded protection for fragile items. Users sending oversized flats or heavy parcels will need a different enclosure.

Highlights

  • SFI certified paper supports responsible forestry
  • 92% brightness gives documents a clean professional look
  • Vellum finish provides a smooth writing surface
  • Self-seal latex adhesive closes securely without moisture
  • 500 envelopes per box keeps mailroom stocked

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

What are the exact envelope dimensions so I can confirm they fit my catalogs?

These catalog envelopes measure 6 inches by 9 inches with an open-end design and a center seam for flat insertion of documents.

How do I seal the latex adhesive flaps without damaging the seal?

Remove the protective strip from the extended flap, press firmly along the entire Pres-Stik strip, and avoid touching the adhesive before application.

When should I replace the box once the self-seal adhesive loses tack?

Each box contains 500 envelopes; the SFI-certified 28-lb sulphite paper resists humidity, but replace the box if flaps no longer bond after firm pressure.

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