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White #9 side-seam envelope with twin poly windows and self-seal flaps, box of 500

WESTERN STATES

WESTERN STATES #9 Side Seam DG-2 Double Window Pres-Stik Envelope

SKU CH-B8WR-Q2CM8

Holds standard business correspondence with two poly windows and a self-sealing closure for quick processing

  • Double window layout shows sender and recipient addresses
  • Self-sealing Pres-Stik closure secures contents without moisture
  • Blue Wesco inside tint protects confidential document details
  • 92 % brightness white sulphite stock gives crisp professional look
  • Box of 500 envelopes supports high-volume mailing needs

#9 Side Seam Double Window Envelope

The #9 Side Seam DG-2 envelope is designed for high-volume business mailings that require two visible address panels. A box of 500 self-sealing units supports efficient processing for invoices, statements or direct-mail campaigns.

Check window alignment before ordering

Verify that your document layout matches the top window at 7/8 by 3-1/2 inches and the bottom window at 1 by 3-1/2 inches. Confirm your printer feeds 3-7/8 by 8-7/8 inch stock reliably and that the side-seam construction suits your inserting equipment.

Vellum finish with blue security tint

White sulphite paper at 92% brightness gives a clean, professional appearance while the Blue Wesco inside tint obscures confidential content. Twin flaps with Pres-Stik adhesive seal without moisture, and poly windows resist tearing during automated handling.

How it compares

Measured against everything we stock in Document Envelopes & Pouches, at today’s prices. Recalculated every night.

Price $83.99
Pricier than about 73% of the 638 comparable items (median $61.99).

Specifications

Product
Brand nameThe Envelope Supplies Shop

Questions about this item

What comes inside the box and is anything else required?

The box contains 500 self-sealing envelopes with twin flaps down and poly windows. No separate adhesive or sealing supplies are needed.

Which version or capacity should I choose for my mailing volume?

This listing is the single 500-count box in white sulphite with blue Wesco inside tint. No other capacities or colour variants are offered here.

How does the 92% brightness look once the envelope is printed and mailed?

The 92% brightness vellum finish gives a clean, professional white surface that keeps printed addresses sharp and readable through the poly windows.

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