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 white 6.5 x 9.5 inch open end catalog envelopes with self-seal flaps

WESTERN STATES

WESTERN STATES 6.5 x 9.5 Open End Catalog Envelope 28# White Self-Seal Flaps Extended Box 500

SKU CH-H0GK-4JWJS

Holds 6.5 x 9.5 inch documents in 28# white SFI certified sulphite with self-seal latex flaps extended, 500 per box weighing 13 lbs

  • SFI certified paper meets responsible forestry standards
  • 92% brightness gives documents a clean professional look
  • Self-seal latex adhesive closes envelopes without moisture
  • 28# white sulphite stock resists tearing in transit
  • Box of 500 supports high-volume mailing needs

White Sulphite Catalog Envelope

This 6.5 x 9.5 inch open-end envelope uses 28-pound white sulphite paper with a vellum finish. The SFI-certified stock delivers 92% brightness for a clean, professional appearance. A centre-seam construction adds strength for catalogues, reports or multi-page mailings. Each box contains 500 envelopes.

Self-Seal Flap Performance

The Pres-Stik latex adhesive activates with pressure alone, so no moistening is required during high-volume mailing sessions. Extended flaps stay flat while filling, then seal reliably across the full width. The 28# basis weight resists tearing when stuffed with thicker inserts. Adhesive integrity holds through automated sorting equipment.

Paper Specification Limits

The 28# sulphite sheet sets a practical ceiling on insert bulk before seam stress becomes an issue. Latex adhesive performs best at normal indoor humidity; extreme dryness or moisture can reduce tack. SFI certification confirms responsible fibre sourcing but does not alter mailing regulations. Box weight of 13 lbs determines handling and palletising limits.

Highlights

  • SFI certified paper meets responsible forestry standards
  • 92% brightness gives documents a clean professional look
  • Self-seal latex adhesive closes envelopes without moisture
  • 28# white sulphite stock resists tearing in transit
  • Box of 500 supports high-volume mailing needs

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

How much does a full box of these 28# envelopes weigh when I keep it on the shelf all day?

Each box of 500 envelopes weighs 13 lbs, so the shelf load is constant and produces no noise or heat.

Do I need a separate moistener or tape to seal the self-seal flaps on these 6.5 x 9.5 envelopes?

No, the Pres-Stik latex adhesive activates with pressure alone — just press the extended flap down to seal.

Will these 92% brightness white sulphite envelopes match the shade of older letterhead I already have?

The 92% brightness white with vellum finish gives a consistent, neutral tone that pairs well with most existing stationery.

Also in this aisle

People compared these

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