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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.
Packed in 100 count: so many uses means supply is depleted quickly! Conveniently packed in 100 count to reduce frequency of purchasing. Brown kraft stock designed to give contents extra protection during mailing, storage and handling. Great for home, office, school, interoffice or mailing.


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. Great for home, office, interoffice or mailing. Brown kraft 28 lb stock: perfect for everyday home and business use, Quality Park's clasp envelopes are constructed from heavyweight 28 lb.

Heavyweight envelope set – box of 100 single envelopes accommodates Variety of Small & Large Documents for Home, Business, Office, Legal & More. Double seal design – provides dependable security for work & Personal Mailing; Features Reusable Dual Prong Clasps & Gummed Seals w/ Tough Adhesive Glue.




These 9x12 envelopes with a self seal redi-tac clasp eliminate USPS charges for metal parts; reusable & thrifty; made of 28 lb kraft paper; 100/box. A great value; large envelopes are an economical way to send manuscripts, certificates or other documents you’d rather mail flat.

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28lb stock; manufactured from tough, the durable, the brown kraft material will insure privacy of the envelopes contents, standing up to normal postal wear and tear without damage, durable Construction like 28lb paper stock, woven paper extends the tampering resistance of this envelope, .
1. Mead
#ad
9" x 12", Brown Kraft, Mead Envelopes, 100/Box CO790, Clasp
#adMead #ad - Extra heavy-duty opaque 32 lb. 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
9 x 12 inches; 100 envelopes per box.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. Quality Park
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Great for Filing, 28 lb Brown Kraft, Quality Park 9 x 12 Clasp Envelopes with Deeply Gummed Flaps, Storing or Mailing Documents, 100 per Box 37890
#adQuality Park #ad - Brown kraft 28 lb stock: perfect for everyday home and business use, Quality Park's clasp envelopes are constructed from heavyweight 28 lb. 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.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.
More information #ad
Reusable clasp: designed for repeated use, double prong metal clasp is durable and eyelets are reinforced. Packed in 100 count: so many uses means supply is depleted quickly! Conveniently packed in 100 count to reduce frequency of purchasing. Brown kraft stock designed to give contents extra protection during mailing, storage and handling. Great for home, office, school, interoffice or mailing.
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
3. Amazon Basics
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Amazon Basics 9 x 12-Inch Clasp Kraft Envelopes, Gummed, 100-Pack
#adAmazon Basics #ad - Double-prong metal clasp closure and reinforced eyelet keep documents securely contained. Clasp envelope 100-pack for filing, storing, or mailing documents.More information #ad
Made with thick 28-pound kraft paper for reliable strength and protection. Measures 9 by 12 inches each; backed by an Amazon Basics 1-year limited warranty. Moisture-activated gummed surface on flap creates a permanent seal.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
4. Quality Park
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28 lb Brown Kraft, Quality Park 9 x 12 Clasp Envelopes with Deeply Gummed Flaps, Great for Filing, 250 per Box 37590, Storing or Mailing Documents
#adQuality Park #ad - Packed in 250 count: so many uses means supply is depleted quickly! Conveniently packed in 250 count to reduce frequency of purchasing. Reusable clasp: designed for repeated use, school, 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.
More information #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. Brown kraft stock designed to give contents extra protection during mailing, storage and handling. Great for home, office, interoffice or mailing. Brown kraft 28 lb stock: perfect for everyday home and business use, Quality Park's clasp envelopes are constructed from heavyweight 28 lb.
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
5. EnDoc
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Brown Kraft Catalog Envelopes Gummed Seal Closure – 28lb Heavyweight Paper 9.5x12.5 inch Envelopes for Home, Office, Business, 100 Pack, Legal or School., EnDoc 9 1/2 x 12 1/2 Clasp Envelopes
#adEnDoc #ad - Made in usa, durable 28lb standard brown kraft envelopes proudly made right here in the United States Provides Confidential Protection & Exceptional Rip, heavy duty paper – extra strong, Tear & Puncture Resistance - Thank you for supporting American manufacturing!.Heavyweight envelope set – box of 100 single envelopes accommodates Variety of Small & Large Documents for Home, Business, Office, Legal & More. Double seal design – provides dependable security for work & Personal Mailing; Features Reusable Dual Prong Clasps & Gummed Seals w/ Tough Adhesive Glue.
More information #ad
Safe for storage – ideal 9 1/2 x 12 1/2 size is perfect for both mailing & more; Buy in Bulk & Storing Important Paperwork, Stamps, Craft Projects, Dies & Save Big. Catalog orientation – classic open end style enables fast, Convenient Stuffing for Letter, Legal Document, pamphlet, Coupon & Other Common Mailers.Brand | EnDoc #ad |
Manufacturer | EnDoc #ad |
Part Number | En125 |
Model | En125 |
More information #ad
6. Amazon Basics
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100-Pack, AMZP13, 9x12 Inch, Brown Kraft, Amazon Basics Catalog Mailing Envelopes, Peel & Seal
#adAmazon Basics #ad - 100-pack of 9 x 12 inch catalog envelopes. Measures 9 by 12 inches each. Durable 28-pound brown kraft material provides privacy and strength. Easy-to-seal peel and Seal closure—no moisture needed. Ideal for mailing catalogs, brochures, booklets, and multi-page documents.More information #ad
Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Part Number | AMZP13 |
Model | AMZP13 |
More information #ad
7. Amazon Basics
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Amazon Basics Catalog Mailing Envelopes, White, Peel & Seal, 9x12 Inch, 100-Pack
#adAmazon Basics #ad - Durable 28-pound white woven paper for quality and strength. 100-pack of no. 10-1/2 catalog envelopes. Ideal for mailing catalogs, brochures, booklets, and multi-page documents. Easy-to-seal peel and Seal closure—no moisture needed. Measures 9 by 12 inches each.More information #ad
Brand | Amazon Basics #ad |
Manufacturer | Amazon Basics #ad |
Part Number | AMZP15 |
Model | AMZP15 |
More information #ad
8. Quality Park
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Gummed Flap, Brown Kraft, 100/Box QUA37790, Quality Park 9" x 12" Clasp Envelopes
#adQuality Park #ad - Brown kraft stock gives contents extra protection during mailing, storage and handling. Permanent seal: in addition to the clasp closure, the deep gumming on the flap can create a permanent seal. Heavy duty: extra durable, 32 lb.More information #ad
All-purpose: perfect size for mailing and storing a variety of documents, especially letter-sized documents when folding is undesirable. Designed for repeated use: Double prong metal clasp is durable and eyelets are reinforced. 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
9. Quality Park
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100 per Box QUA43568, with Reusable Redi-Tac Closure & Gummed Flap, Quality Park 9 x 12 Postage Saving ClearClasp Envelopes, 28 lb Kraft Paper
#adQuality Park #ad - Heavyweight 28 lb kraft paper manila envelopes are opaque to protect private contents; strong enough for bulk mailing or organizing the office.These 9x12 envelopes with a self seal redi-tac clasp eliminate USPS charges for metal parts; reusable & thrifty; made of 28 lb kraft paper; 100/box. A great value; large envelopes are an economical way to send manuscripts, certificates or other documents you’d rather mail flat.
More information #ad
Reseal your clearclasp envelope with Redi-Tac seal as many times as needed for circulating interoffice mail; just press and go. A deeply gummed yellow envelope flap is laid thick with moisture-activated adhesive; creates a firm seal you can trust in the mail.Brand | Quality Park #ad |
Manufacturer | Quality Park #ad |
Height | 3 Inches |
Length | 12.2 Inches |
Weight | 4 Pounds |
Width | 9.75 Inches |
Part Number | QUA43568 |
Model | QUA43568 |
More information #ad
10. Aimoh
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100 Count, 28lb, 9x12 Inch 38300, 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes
#adAimoh #ad - 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! 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.9
More information #ad
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. Durable multi-purpose; ideal for mailing catalogues, direct mail, brochures and more, documents, magazines, promotional material, Aimoh’s Catalog Envelopes can be easily hand addressed or customized with business information.228lb stock; manufactured from tough, the durable, the brown kraft material will insure privacy of the envelopes contents, standing up to normal postal wear and tear without damage, durable Construction like 28lb paper stock, woven paper extends the tampering resistance of this envelope, .
Brand | Aimoh #ad |
Manufacturer | Aimoh #ad |
Weight | 3.9 Pounds |
Part Number | 38300 |
More information #ad