WESTERN STATES
WESTERN STATES Open Side Booklet Envelopes 9 x 12 28# Tan Kraft Side Seams Box of 500
Open-side booklet envelopes measuring 9 by 12 inches, 28 lb tan kraft with side seams, supplied in a box of 500
- SFI Certified paper supports responsible sourcing
- 28 lb Kraft stock resists tearing during handling
- Open side design speeds document insertion
- Side seam construction adds strength for bulky contents
- 500 envelopes per box reduces reorder frequency
Product Identity
These open side booklet envelopes measure 9 inches by 12 inches and come in a box of 500. They suit offices, schools and mailrooms that send flat documents, catalogues or booklets without folding. The tan kraft colour and vellum finish give a professional appearance for everyday correspondence.
Build and Sealing
Each envelope uses 28 pound Suntan Kraft paper that carries SFI certification. Two side seams run underneath the body for added strength during handling. The remoistening seal on the flap down closure secures contents without tape or adhesives, while the vellum surface accepts pen, printer toner and labels cleanly.
Upgrade Context
This box replaces smaller packs of lighter weight envelopes when volume rises or when side seam construction is preferred over centre seam styles. The jump is worth it for teams that need consistent sizing, reliable sealing and a certified paper source for regular high quantity mailings.
Highlights
- SFI Certified paper supports responsible sourcing
- 28 lb Kraft stock resists tearing during handling
- Open side design speeds document insertion
- Side seam construction adds strength for bulky contents
- 500 envelopes per box reduces reorder frequency
Specifications
| Brand | The Envelope Supplies Shop |
|---|
Questions about this item
What size documents fit in the 9 x 12 open side envelope?
The 9 x 12 open side format accepts unfolded letter or A4 sheets inserted through the 12-inch edge.
How much space do 500 envelopes occupy in the box?
A full box of 500 weighs 20.5 lbs and measures to standard carton dimensions for 9 x 12 stock.
How do you seal the remoistening flap without it sticking prematurely?
Apply a light, even moisture to the gummed flap only, press firmly, and avoid touching the adhesive before use.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
WESTERN STATES #10 Repulpable Window Envelopes White 30% Recycled Compostable Window Box 500
WESTERN STATES Door Hanger Envelope White 92% Brightness Oval Cutout 500
Econoco BH55 Double Bulletin Sign Holder 22" x 28" Chrome
- Sign Holders



