Top 10 Mailing Envelopes 9×12 – Clasp Mailing Envelopes

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1. Quality Park


28 lb Brown Kraft, Storing or Mailing Documents, 100 per Box 37890, Great for Filing, Quality Park 9 x 12 Clasp Envelopes with Deeply Gummed Flaps

Quality Park #ad - 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, interoffice or mailing. 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.

Reusable clasp: designed for repeated use, office, school, double prong metal clasp is durable and eyelets are reinforced . Brown kraft 28 lb stock: perfect for everyday home and business use, Quality Park's clasp envelopes are constructed from heavyweight 28 lb.
BrandQuality Park #ad
ManufacturerQuality Park #ad
Height3.75 Inches
Length14 Inches
Weight4 Pounds
Width9.1 Inches
Part NumberQUA37890

2. Amazon Basics


White, AmazonBasics Catalog Mailing Envelopes, 9x12 Inch, 100-Pack, Peel & Seal

Amazon Basics #ad - Ideal for mailing catalogs, booklets, brochures, and multi-page documents.100-pack of #10-1/2 catalog envelopes. Measures 9 by 12 inches each. Durable 28-pound white woven paper for quality and strength. Easy-to-seal peel & Seal closure—no moisture needed.
BrandAmazon Basics #ad
ManufacturerAmazonBasics #ad
Part NumberAMZP15

3. Amazon Basics


AMZP13, Brown Kraft, AmazonBasics Catalog Mailing Envelopes, Peel & Seal, 9x12 Inch, 100-Pack

Amazon Basics #ad - 100-pack of 9 x 12 inch catalog envelopes. Measures 9 by 12 inches each. Easy-to-seal peel & Seal closure—no moisture needed. Durable 28-pound brown kraft material provides privacy and strength. Ideal for mailing catalogs, booklets, brochures, and multi-page documents.
BrandAmazon Basics #ad
ManufacturerAmazonBasics #ad
Part NumberAMZP13

4. Mead


Office Pak, Mead Clasp Envelopes, Brown Kraft, 9" x 12", 20 per Box 76020

Mead #ad - 20 envelopes per box. 9" x 12" size. Made in United States. Brown Kraft material. Heavyweight envelopes feature a clasp closure, in an Office Pak for larger quantity.
BrandMead #ad
ManufacturerMEAAH #ad
Height14.45 Inches
Length0.88 Inches
Weight0.65 Pounds
Width9 Inches
Part Number76020

5. Aimoh


100 9 x 12 SELF Seal Security White Catalog Envelopes, Security Tinted, Ultra Strong Quick-Seal, 9 x 12 inch 38100, 28lb

Aimoh #ad - White 28lb stock; perfect for everyday business use, super secure seal across each envelope's width that won't easily open or tear and use high quality, Aimoh’s 9x12 envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, white 28lb stock for a professional finish.

Security tint pattern; ideal for secure business mailing and sensitive correspondence, security tint pattern to protect contents, each 9x12 envelope contains a super secure, information and data when mailing.1100 9 x 12 catalog envelopes in every pack for a long lasting supply, easy bulk mailing and everyday business correspondence!9x12 catalog envelopes; aimoh’s white 9x12 security envelopes combine a professional security tint pattern, large size for business documents and premium quality for the best 9x12 envelopes on the market.

For 8. 5x11 documents; large 9x12 size and strong quick-seal closure security tinted envelopes, thicker, perfect for photos, catalogs, larger documents and other business mailings.
BrandAimoh #ad
Height2.5 Inches
Length9 Inches
Weight4.06 Pounds
Width12 Inches
Part NumberFBA_38100

6. ValBox


ValBox 9x11.5 Self Seal Photo Document Mailers 25 Pack Stay Flat White Cardboard Envelopes, 9.25 x 11.75 Inches

ValBox #ad - Provides complete security upgraded adhesive on cardboard mailers creates a strong lasting seal and prevents your contents from falling out during transit. Meanwhile, clean look and crisp white material give it a professional appearance.

Protect them carefully and shape them well. No need worry about leaking privacy. Money back guaranteewe are confident you would love our valbox cardboard envelope in its quality and price. A replacement or 100% refund will be immediately provided to you. Good job in saving your precious time. 9 x 11. 5 inches, paper, documents, cds, books, photos, 25 packs premium quality ValBox document mailers dimension is 9.25 x 11. 75 inches.

Great material makes them super perfect to protect art prints, certificates, etc. Peel & sealthese photo mailers are easy to peel and seal with a strong flap adhesive, no licking of glue or water to moisten when working with multiple mailings. Tear strip design for photo mailer also helps you open its package without struggle. However, if there's anything make you unhappy or unsatisfied, please do contact us without any hesitation.
BrandValBox #ad
ManufacturerValBox #ad
Part NumberVB018



Designed for Secure Mailing, Securely Holds up to 60 Sheets of Paper with Strong Peel and Seal Flap, HERKKA 120 Pack Security White Catalog Envelopes, 9 X 12 Self Seal Security Catalog Envelopes

HERKKA #ad - 120 pack catalog envelopes:herkka white 9x12 security envelopes are perfect size for standard 8. 5'' x 11'' letter paper for business documents and premium quality. Quick-seal closure: our 9x12 catalogs envelopes are designed with an ultra strong SELF-SEAL adhesive strip to create a full, perfect for photos, super secure seal across each envelope's width that won't easily open or tear, thicker, catalogs, larger documents and other business mailings.

It will be more easier than sponges or glue sticks and assure contents will not fall out during transit. Ideal for secure business mailing and sensitive correspondence. Your documents are safe from others during transit. Premium security tint pattern:each 9x12 envelope uses a super secure, information and data when mailing. Suitable for home, business, office, legal and more.

Wide opening saves times when stuffing up to 60 sheets of letter paper securely. Herkka white catalog envelope is with a strong flap adhesive, you just need to pull the tab and it will self seals. High quality kraft paper: made of durable paper for exceptional rip, tear and puncture resistance. Printer friendly : self sealing catalog envelope is thick enough, you can run these through your laser or ink-jet printers without bleeding ink out or going ink fuzzy. Good job in printing address, shipping labels and etc.
BrandHERKKA #ad
ManufacturerHERKKA #ad
Part NumberSecurityWhiteCatalogEnvelopes-120

8. Blue Summit Supplies


Designed for Secure Mailing, 100 9 X 12 Self Seal Golden Brown Kraft Catalog Envelopes, Oversize Strong Peel and Seal Flap with 28 Pound Kraft Paper- 100 Envelopes

Blue Summit Supplies #ad - Provides complete security: your documents are safe from others during transit. Allows for organized storage of personal and company documents due to its large size.

Safe for sensitive documents like tax, legal, and financial documents. Perfect size for standard 8. 5’’ x 11’’ letter paper, wide opening saves times when stuffing up to 60 sheets of letter paper securely. Just peel and seal to create a strong lasting seal: No need to worry about your contents failing out during transit even when shipping hefty shipments like 60 sheets of paper or magazines. Securely holds hefty files during transit due to it sturdy construction and thick 28 LB Kraft Paper. Great for storing receipts, magazines, monthly financials, tax returns, reports and more.
BrandBlue Summit Supplies #ad
ManufacturerBlue Summit Supplies #ad
Weight4.25 Pounds
Part NumberBSS-92588-014



UCGOU 8.5x12 Inch White Padded Envelopes Water Proof Poly Bubble Mailers Self Seal Mailing Envelopes Book Mailers 25pcs

UCGOU #ad - Cost-effective bubble mailers the padded envelopes are lightweight and water-resistant. There's no need reinforcement tape and it doesn't come apart unless you tear it up. Cushion mailers the padding is sufficient to mail small and the items that needed protection.

Keep your products safety and make your customer no complaint. The quality of the mailer will hold up them in shipping well. Dimension 8. 5x12-inch white poly bubble cushioned lined envelopes. Usable size: 8. 5x11 inch. Mail stuff the envelopes are strong and you could mail books and other items.

Lower the shipping cost of your business and protect your products on the rainy or snowy day. Self sealed envelopes the adhesive on the fold-over flap is strong enough and goes end-to-end. With opaque white outer and grey inner poly film, The bubble envelopes feel nice to the touch and are perfect for handwriting, labeling and stamping.
BrandUCGOU #ad
ManufacturerUCGOU #ad
Height5.28 Inches
Length11.65 Inches
Weight0.8 Pounds
Width9.37 Inches
Part NumberB06XJ5PRMX



Metronic 100 Pcs 9x12" White Poly Mailer Envelopes Shipping Bags with Self Adhesive, Waterproof and Tear-Proof Postal Bags White

METRONIC #ad - The white mailing bags have a peel-off strip that is very sticky that will seal the bag very well, it's quick seal, no licking or water needed. Provides confidentiality - these poly mailers were white outer surface, black inner lining, so it looks like light grey color not a true bright white. The plastic mailing is thin, and quite flexible, durable, so they're very forgiving of weirdly-shaped contents, and it's easy to add in a bit of padding, like newspaper or bubble wrap, for extra protection.

If you have many orders need to post everyday, these plastic mailing bags perfect for you! Even though poly mailers don't offer interior cushioning, they are made to withstand the rigors of the shipping process. A poly mailer is usually made of polyethylene but can also be made of heavy-duty nylon fibers. Widely use - the 9x12 mailer bags are quite useful for soft items, blankets, such like T-shirts, scarves, or other non breakable items.

The poly mailer bags are a good strong plastic shipping bag. They are definitely quite durable and the sticky strip sticks very well. Poly mailers are a great choice for their high-strength design that keeps contents secure against moisture, chemicals, tampering, puncturing and tearing. The mailing bags used of opaque materials convenient for protect your privacy with a professional appearance. Save your time and shipping cost - the poly mailer bags are good acceptable thickness for shipping soft-goods, and they are light enough to safe you some money on weight for shipping.
ManufacturerMetronic International #ad
Height0.1 Inches
Length12 Inches
Weight0.34 Pounds
Width9 Inches
Part Number464647463