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White #12 envelope with poly window diagonal seam vellum finish box of 500

WESTERN STATES

WESTERN STATES #12 Poly Window Envelope 4.75 x 11 White 24# Diagonal Seam Box 500

SKU CH-00KN-VV4E9

Box of 500 white #12 envelopes with a poly window, 24 lb SFI-certified sulphite, diagonal seam and remoistening seal

  • SFI certified paper supports responsible forestry
  • 92% brightness gives crisp document presentation
  • Vellum finish adds professional tactile feel
  • Diagonal seam construction strengthens envelope durability
  • Poly window protects contents while showing address

Standard business correspondence

These #12 poly window envelopes measure 4.75 x 11 inches and come in a box of 500 for daily mailing tasks. The white sulphite paper carries SFI certification and a 92% brightness rating with a vellum finish. A C-style window sits 7/8 inch from the left and 1/2 inch from the bottom to show recipient details clearly. The 24-pound stock and diagonal seam construction suit routine office volume.

Fits standard filing and inserter workflows

The diagonal seam lies flat in trays and feeds smoothly through automatic inserting equipment without special adjustments. Remoistening seal flaps close securely with a simple moisture application. Each box weighs 10 pounds and stores easily on shelves or in supply cabinets. Cartons of 2500 units support bulk ordering for larger operations.

Consistent performance across long print runs

The sulphite stock resists curling during extended laser or inkjet printing sessions. Window film maintains clarity and adhesion through repeated handling and postal processing. Vellum finish reduces static buildup that can cause misfeeds in high-volume machines. Diagonal seam strength holds under the weight of multi-page inserts without splitting.

Highlights

  • SFI certified paper supports responsible forestry
  • 92% brightness gives crisp document presentation
  • Vellum finish adds professional tactile feel
  • Diagonal seam construction strengthens envelope durability
  • Poly window protects contents while showing address

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

Will the remoistening seal hold after the envelopes sit in a warm mailroom for weeks?

The remoistening seal is designed to activate with moisture when you are ready to mail; storing the box in a warm area does not degrade the adhesive before use.

How much does a full box of 500 envelopes weigh when placed on a desk all day?

Each box weighs 10 lbs, so the stack stays put without sliding or creating noticeable vibration.

What size window does the envelope have so I can match my printed address block?

The poly window measures 1-1/8" x 4-1/2" and sits 7/8" from the left edge and 1/2" from the bottom.

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