As an Amazon Associate I earn from qualifying purchases.
Reusable, office, double prong metal clasp is durable and designed for repeated use and eyelets are reinforced. In addition to the clasp closure, these envelopes have a moisture activated seal with deep gumming on the flap to create a permanent seal.







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, papers, magazines, or other items that can fit inside without needing to be folded.

9
9x12 kraft envelopes; aimoh’s catalog envelopes combine tough 28lb golden kraft paper stock, strong self-sealing SELF-SEAL Closure for the best catalog envelopes on the market, perfect for large documents and all business correspondence. Self adhesive seal; aimoh's 9 x 12 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, ideal for mailing thicker catalogues, super secure seal across each envelope's width that won't easily open or tear, brochures and magazines.
1. Quality Park
#ad
28 lb Brown Kraft, Great for Filing, Quality Park 9 x 12 Clasp Envelopes with Deeply Gummed Flaps, 100 per Box QUA37890, Storing or Mailing Documents
#adQuality Park #ad - Great for home, school, interoffice or mailing. Brown kraft stock to give contents extra protection during mailing, storage and handling.Reusable, office, double prong metal clasp is durable and designed for repeated use and eyelets are reinforced. In addition to the clasp closure, these envelopes have a moisture activated seal with deep gumming on the flap to create a permanent seal.
More information #ad
Conveniently packed in large count to reduce frequency of purchasing. 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.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
2. Quality Park
#ad
Brown Kraft, Quality Park 9" x 12" Clasp Envelopes, Gummed Flap, 100/Box QUA37790
#adQuality Park #ad - Brown kraft stock gives contents extra protection during mailing, storage and handling. Heavy duty: extra durable, 32 lb. 100 per box: always have a good supply on hand with this 100 count box. Permanent seal: in addition to the clasp closure, the deep gumming on the flap can create a permanent seal.More information #ad
Designed for repeated use: Double prong metal clasp is durable and eyelets are reinforced. All-purpose: perfect size for mailing and storing a variety of documents, especially letter-sized documents when folding is undesirable.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
3. Mead
#ad
Clasp, Brown Kraft, Mead Envelopes, 100/Box CO790, 9" x 12"
#adMead #ad - Brown kraft material provides privacy of contents. Extra heavy-duty opaque 32 lb. 9 x 12 inches; 100 envelopes per box. 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
4. Amazon Basics
#ad
Amazon Basics 9 x 12-Inch Clasp Kraft Envelopes, Gummed, 100-Pack
#adAmazon Basics #ad - Moisture-activated gummed surface on flap creates a permanent seal. Double-prong metal clasp closure and reinforced eyelet keep documents securely contained.More information #ad
Measures 9 by 12 inches each; backed by an Amazon Basics 1-year limited warranty. Made with thick 28-pound kraft paper for reliable strength and protection. Clasp envelope 100-pack for filing, storing, or mailing documents.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
5. STAPLES
#ad
Staples 570253 Wove Clasp Envelopes 9-Inch X 12-Inch White 100/Box 570253/14210
#adSTAPLES #ad - Clasp envelope is sure to attract attention and deliver in style. Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes. Dimensions: 9"L x 12"H. White paper shows labeling and writing clear and concise. Sold as 100/Box.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
6. Columbian Envelopes
#ad
9 x 12 Inches, 100 Per Box CO790, Columbian Clasp Envelopes, Brown Kraft
#adColumbian Envelopes #ad - 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
Brown kraft material provides privacy of contents. Extra heavy-duty opaque 32 lb. 9 x 12 inches; 100 envelopes per box.Brand | Columbian Envelopes #ad |
Manufacturer | LSC Communicaitons #ad |
Height | 3.9 Inches |
Length | 9.25 Inches |
Weight | 4.6 Pounds |
Width | 14.25 Inches |
Part Number | COLO790 |
Model | CO790 |
Warranty | 1 Year Limited Warranty. Warranty will replace defective product upto one year from purchase date. |
More information #ad
7. Office Depot
#ad
Office Depot® Brand Clasp Envelopes, Brown, Box of 100, 9 1/2" x 12 1/2"
#adOffice Depot #ad - Large clasp envelopes are a staple in any office. Greener choice - contains 20% postconsumer recycled content. Whether you need to mail a large document or just keep the pages of your annual report together in your desk, these Office Depot manila clasp envelopes can help.More information #ad
Reinforced metal clasp closure helps secure your documents inside the brown envelopes.Brand | Office Depot #ad |
Manufacturer | Office Depot #ad |
Part Number | ODP77993 |
More information #ad
8. Blue Summit Supplies
#ad
Letter Size Clasp Mailing Envelopes Made From 28lb Kraft Paper, For Mailing Larger Papers or Magazine, Blue Summit Supplies 100 9” x 12” Clasp Envelopes with Gummed Seal, Bulk 100 Pack
#adBlue Summit Supplies #ad - 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.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, papers, magazines, or other items that can fit inside without needing to be folded.
More information #ad
Easily send or store receipts, documents, letters, magazines and more with our durable 9” x 12” clasp envelopes made from 28lb kraft paper. 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.Brand | Blue Summit Supplies #ad |
Manufacturer | Blue Summit Supplies #ad |
Part Number | BSS-92588-1097 |
More information #ad
9. Aimoh
#ad
9x12 Inch 38300, 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes, 28lb, 100 Count
#adAimoh #ad - Durable multi-purpose; ideal for mailing catalogues, direct mail, documents, magazines, brochures and more, promotional material, Aimoh’s Catalog Envelopes can be easily hand addressed or customized with business information.9x12 self-seal kraft envelopes; ideal for everyday business use and professional mailings, each box of our premium 9x12 mailing envelopes with the peel and seal closure provide great value 100 envelope supply, for the best value on the market!28lb stock; manufactured from tough, durable construction like 28lb paper stock, woven paper extends the tampering resistance of this envelope, the brown kraft material will insure privacy of the envelopes contents, the durable, standing up to normal postal wear and tear without damage, .9
More information #ad
99x12 kraft envelopes; aimoh’s catalog envelopes combine tough 28lb golden kraft paper stock, strong self-sealing SELF-SEAL Closure for the best catalog envelopes on the market, perfect for large documents and all business correspondence. Self adhesive seal; aimoh's 9 x 12 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, ideal for mailing thicker catalogues, super secure seal across each envelope's width that won't easily open or tear, brochures and magazines.
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Weight | 3.9 Pounds |
Part Number | AE-912CGS |
More information #ad