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Box of 500 white 9 x 12 envelopes smooth finish

WESTERN STATES

WESTERN STATES Machine Insertable Open Side Booklet Envelopes 9 x 12 25# White Paper/Poly/Paper Box of 500

SKU CH-EW2N-1EDAH

Machine-insertable open-side booklet envelopes with a durable paper-poly-paper construction and smooth finish, supplied 500 per box

  • Machine insertable design speeds bulk mailing runs
  • 9 x 12 open-side format fits standard documents flat
  • 25# paper/poly/paper construction resists tearing in feeders
  • Smooth finish ensures clean print quality on every envelope
  • 500-count box supplies high-volume operations without frequent reordering

Machine Insertable Envelopes

These envelopes measure 9 by 12 inches and use a 25-pound paper-poly-paper construction. The smooth finish and open-side design allow automatic inserting equipment to feed them reliably. Each box contains 500 units for high-volume mailing operations.

Sustained Mailing Performance

The layered paper-poly-paper structure resists tearing during continuous machine insertion cycles. Two side seams under the construction distribute stress evenly across the envelope body. The remoistening seal maintains consistent adhesion over long production runs without jamming.

Postal Handling Limits

At 19.5 pounds per box of 500, the package weight stays within standard shipping thresholds for single-cart handling. The Dura-Print surface accepts toner and ink without smudging during automated sorting. No window means full address visibility for optical character recognition systems.

Highlights

  • Machine insertable design speeds bulk mailing runs
  • 9 x 12 open-side format fits standard documents flat
  • 25# paper/poly/paper construction resists tearing in feeders
  • Smooth finish ensures clean print quality on every envelope
  • 500-count box supplies high-volume operations without frequent reordering

Specifications

BrandThe Envelope Supplies Shop

Questions about this item

Does the 25# paper/poly/paper construction run hotter or louder than standard envelopes during continuous insertion?

The envelopes are passive paper/poly/paper stock with no moving parts, so they generate no heat or noise themselves; only the inserter's motor and rollers produce sound and warmth.

What inserting equipment is required to use these machine-insertable open-side booklet envelopes?

A compatible inserting machine that accepts 9 x 12 open-side booklet envelopes with side seams under and a remoistening seal is needed; the envelopes cannot be fed by hand into a printer tray.

Will the side-seam-under design and remoistening seal work with older inserters that expect centre seams and no flap moisture?

The envelopes have two side seams under and a remoistening seal, so an older inserter must be adjustable for side-seam feeding and flap moistening; otherwise jams or seal failures may occur.

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