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Conveniently packed in large count to reduce frequency of purchasing. Reusable, school, office, double prong metal clasp is durable and designed for repeated use and eyelets are reinforced .



Made from 28lb kraft paper, these envelopes resist tearing to keep your contents safe, and are easy to label with any type of writing utensil or printed label sticker. With a metal clasp and gummed seal on the envelope flap, your contents will stay secure whether you’re mailing them, or keeping them safe in a file.


Great for home, school, office, interoffice or mailing. Reusable clasp: designed for repeated use, double prong metal clasp is durable and eyelets are reinforced.
The flaps close with full flap gum to endure humid climates to ensure the envelope stays sealed so your contents don't fall out! 9 x 12 size: perfect size for mailing and storing 8-1/2 x 11 sized documents flat when folding is undesirable. Brown kraft stock designed to give contents extra protection during mailing, storage and handling.


1. Mead
#ad
Brown Kraft, 100/Box CO790, Clasp, 9" x 12", Mead Envelopes
#adMead #ad - Extra heavy-duty opaque 32 lb. 9 x 12 inches; 100 envelopes per box. Brown kraft material provides privacy of contents. Durable multi-purpose envelope; dual purpose seal allows for multiple uses; use the moisture activated gummed seal for mailing or the strong metal clasp for repeated use and storage purposes.More information #ad
Brand | Mead #ad |
Manufacturer | Mead #ad |
Height | 14.88 Inches |
Length | 3.75 Inches |
Width | 9.25 Inches |
Part Number | CO790m |
Model | CO790m |
More information #ad
2. Amazon Basics
#ad
Gummed, 100-Pack, Amazon Basics 9 x 12-Inch Clasp Kraft Envelopes
#adAmazon Basics #ad - Clasp envelope 100-pack for filing, storing, or mailing documents. Moisture-activated gummed surface on flap creates a permanent seal. Measures 9 by 12 inches each; backed by an Amazon Basics 1-year limited warranty.More information #ad
Double-prong metal clasp closure and reinforced eyelet keep documents securely contained. Made with thick 28-pound kraft paper for reliable strength and protection.Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Height | 3.13 Inches |
Length | 12 Inches |
Weight | 1.76 Pounds |
Width | 9 Inches |
Part Number | AMZ37890 |
Model | AMZ37890 |
More information #ad
3. Quality Park
#ad
Quality Park 9 x 12 Clasp Envelopes with Deeply Gummed Flaps, Great for Filing, 28 lb Brown Kraft, 100 per Box QUA37890, Storing or Mailing Documents
#adQuality Park #ad - Perfect for everyday home and business use, clasp envelopes are made from heavyweight 28 lb. Great for organizing and storing letters, documents, photos or records.Conveniently packed in large count to reduce frequency of purchasing. Reusable, school, office, double prong metal clasp is durable and designed for repeated use and eyelets are reinforced .
More information #ad
Great for home, interoffice or mailing. In addition to the clasp closure, these envelopes have a moisture activated seal with deep gumming on the flap to create a permanent seal. Brown kraft stock to give contents extra protection during mailing, storage and handling.Brand | Quality Park #ad |
Manufacturer | Quality Park #ad |
Height | 3.75 Inches |
Length | 14 Inches |
Weight | 4 Pounds |
Width | 9.1 Inches |
Part Number | QUA37890 |
Model | 37890 |
More information #ad
4. Mead
#ad
Office Pak, 9" x 12", Brown Kraft, 20 per Box 76020, Mead Clasp Envelopes
#adMead #ad - 20 envelopes per box. Heavyweight envelopes feature a clasp closure, in an Office Pak for larger quantity. Made in United States. Brown Kraft material. 9" x 12" size.More information #ad
Brand | Mead #ad |
Manufacturer | ACCO Brands #ad |
Height | 14.45 Inches |
Length | 0.88 Inches |
Weight | 0.65 Pounds |
Width | 9 Inches |
Part Number | 76020 |
Model | 76020 |
Warranty | kkk |
More information #ad
5. Quality Park
#ad
100/Box QUA37790, Quality Park 9" x 12" Clasp Envelopes, Brown Kraft, Gummed Flap
#adQuality Park #ad - Brown kraft stock gives contents extra protection during mailing, storage and handling. All-purpose: perfect size for mailing and storing a variety of documents, especially letter-sized documents when folding is undesirable.More information #ad
Permanent seal: in addition to the clasp closure, the deep gumming on the flap can create a permanent seal. Designed for repeated use: Double prong metal clasp is durable and eyelets are reinforced. Heavy duty: extra durable, 32 lb. 100 per box: always have a good supply on hand with this 100 count box.Brand | Quality Park #ad |
Manufacturer | Quality Park #ad |
Height | 4 Inches |
Length | 14.9 Inches |
Weight | 0.06 Pounds |
Width | 9.3 Inches |
Part Number | QUA37790 |
Model | QUA37790 |
More information #ad
6. Blue Summit Supplies
#ad
Blue Summit Supplies 100 9” x 12” Clasp Envelopes with Gummed Seal, Letter Size Clasp Mailing Envelopes Made From 28lb Kraft Paper, For Mailing Larger Papers or Magazine, Bulk 100 Pack
#adBlue Summit Supplies #ad - Easily send or store receipts, letters, documents, magazines and more with our durable 9” x 12” clasp envelopes made from 28lb kraft paper.Made from 28lb kraft paper, these envelopes resist tearing to keep your contents safe, and are easy to label with any type of writing utensil or printed label sticker. With a metal clasp and gummed seal on the envelope flap, your contents will stay secure whether you’re mailing them, or keeping them safe in a file.
More information #ad
This 100 pack of clasp envelopes is a highly affordable alternative to more expensive options. 9” x 12” size is perfect for letter size documents, magazines, papers, or other items that can fit inside without needing to be folded.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Part Number | BSS-92588-1097 |
More information #ad
7. Quality Park
#ad
Quality Park Quality Park Executive Gray Gummed Clasp Envelopes QUA38590, 9 x 12 Inches
#adQuality Park #ad - Heavily gummed flaps. Double prong metal clasps with reinforced eyelets. Clasp envelope on paper stock features a gummed flap closure. Reusable.More information #ad
Brand | Quality Park #ad |
Manufacturer | Quality Park #ad |
Height | 4 Inches |
Length | 14.9 Inches |
Weight | 0.06 Pounds |
Width | 9.3 Inches |
Part Number | 38590 |
Model | 38590 |
More information #ad
8. Quality Park
#ad
250 per Box 37590, 28 lb Brown Kraft, Quality Park 9 x 12 Clasp Envelopes with Deeply Gummed Flaps, Great for Filing, Storing or Mailing Documents
#adQuality Park #ad - Gummed flap: in addition to the clasp closure, these quality park envelopes have a moisture activated secure seal with deep Gumming on the flap to create a permanent seal. Packed in 250 count: so many uses means supply is depleted quickly! Conveniently packed in 250 count to reduce frequency of purchasing.Great for home, school, office, interoffice or mailing. Reusable clasp: designed for repeated use, double prong metal clasp is durable and eyelets are reinforced.
More information #ad
Brown kraft 28 lb stock: perfect for everyday home and business use, Quality Park's clasp envelopes are constructed from heavyweight 28 lb. The flaps close with full flap gum to endure humid climates to ensure the envelope stays sealed so your contents don't fall out! 9 x 12 size: perfect size for mailing and storing 8-1/2 x 11 sized documents flat when folding is undesirable. Brown kraft stock designed to give contents extra protection during mailing, storage and handling.
Brand | Quality Park #ad |
Manufacturer | 0 #ad |
Height | 9.75 Inches |
Length | 14.31 Inches |
Weight | 0.06 Pounds |
Width | 9.06 Inches |
Part Number | 37590 |
Model | 37590 |
More information #ad
9. Quality Park
#ad
9-x-12-inch, Kraft, Quality Park Clasp Envelopes QUA38090
#adQuality Park #ad - Size: 9" x 12". Durable, 28 lb. 100 / box. Ideal for filing applications. Brown kraft with reinforced clasp closure.More information #ad
Brand | Quality Park #ad |
Manufacturer | Quality Park #ad |
Height | 3.9 Inches |
Length | 12.3 Inches |
Weight | 4.35 Pounds |
Width | 11.2 Inches |
Part Number | QUA38090 |
Model | QUA38090 |
More information #ad
10. STAPLES
#ad
Staples 570253 Wove Clasp Envelopes 9-Inch X 12-Inch White 100/Box 570253/14210
#adSTAPLES #ad - Dimensions: 9"L x 12"H. Clasp envelope is sure to attract attention and deliver in style. Sold as 100/Box. White paper shows labeling and writing clear and concise. Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes.More information #ad
Brand | STAPLES #ad |
Manufacturer | Staples #ad |
Height | 12 Inches |
Length | 0 Inches |
Weight | 4.3 Pounds |
Width | 9 Inches |
Part Number | 570253/14210 |
More information #ad