The 8 Best 9x12 Open End Envelopes (2023 reviews)

Here, we present envelope that manages to win our hearts. It's the aimoh 9x12 open end envelope and it's widely considered as one of all-around great envelope you can buy. These are certainly high-quality envelopes. It can be run through a printer at any printer's office and printed with your logo and info. The flaps have a peel off strip that protects the self stick. It holds several pages. It seals tight and doesn’t open in transit. If you are looking for something to mail a few papers in, this is perfect.

These envelopes are advertised as being extra secure because of a pattern printed on the inside of the envelope. It features a peel off strip that protects the self stick from showing through.

Why We Like This:

Useful large envelopes to mail larger items
New and hot release

Best For sending confidential documents: blue Summit supplies Strong Seal

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Not everyone likes to purchase envelope for their daily usage, but the blue summit supplies strong seal would be an anomoly. This is a great crisp clean envelope to use for sending out mail. The black and white weave design in the inside of the envelope definitely keeps paperwork private. It fits a sheaf of 8 1/2 by 11 inch sheets, and the adhesive is adequate. The peel off strip is easy to remove and sticks strongly to the envelope. The inside has some kind of pattern that prevents others from seeing what is inside.

These are of excellent quality, heavy paper and secure seams. The privacy layer is good too so it's not to see through. These are sturdy, but they are not shred resistant and are definitely not on the same sturdiness as tyvek.

Why We Like This:

Excellent quality envelopes with security tinting
Very nice envelopes for mailing lots of pages
Delivers what they promise

Best For Quick sealing: Valbox 9x12 Open End Envelope

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The valbox 9x12 open end envelope's high-end materials makes sure that it ages well with use. These self-sealing cost less than lick-n-stick at most places and are heavy weight for a quality feel. They could use a wider adhesive strip but they do seal. It is easy to peel and seal with a strong flap adhesive, no licking of glue or water to moisten when working with multiple mailings. The adhesive is good, it is possible to re-open and add more to the envelope if need be.

This is a quality envelope and the self sealing actually works. It is perfect for standard letter size papers, business documents, photographs, contracts, magazines and more without folding. It is easy to see through the contents because of the thicken paper. The envelopes seal well. It comes with the strong flap adhesive, catalog envelopes also provide completely security for your contents, making them safe during transit.

Why We Like This:

Not too flimsy or too rigid
Good firm quality and no more licking
One of the new comers and featured product

Best For certificates: Amazon Basics 9x12 Open End Envelope

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The amazon basics 9x12 open end envelope's material feels more premium than its price would suggest. These are the weight of a piece of copy paper. The 28 lb white woven paper is very strong and durable. It is meant for paper, letters, and items flat. The adhesive for the flap closure is very strong and once you have sealed it will have to rip the envelope to open it. The paper stock is extremely lightweight yet still protective in the sense that the white envelopes are not see-through.

These are very useful envelopes with a self-sealing strip. The peel and stick part is nice and has a good bond, but it does allow peeling and resticking. These are appropriate to send a few sheets that you don't want to fold.

Why We Like This:

Branding or watermarks on front, back, inside or out
Nice and sturdy, good adhesive and easy to write on
Delivers what they promise

Best For monthly expense Envelopes: blue Summit supplies 9x12 Open End Envelope

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The blue summit supplies 9x12 open end envelope has killer features for the price point. These are 9 X 12 SELF SEAL Golden Brown Kraft Catalog Envelopes. They fit the postal needs for large envelopes and keep the cards secure but do not add extra weight to the postal cost. It easily writes on the front of the envelope to identify stored contents.

The craft paper is sturdy, and with the color you have privacy. They are not seen through, the strip is sticky and keeps them sealed. It has no protective packaging inside the box. Whether they are used for documents, filing, mailing photos or papers, the size is sure to be perfect for most any item under 9 x. It is easy to work with and get the job done.

Why We Like This:

Great envelope for magazines and storing files
Handy self-sealing craft paper envelopes for a variety of uses
Oversize strong "peel and seal" flap with 28 lb kraft paper
Very nice and well made envelopes

Best For document organization: JAM Paper 9x12 Open End Envelope

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The jam paper 9x12 open end envelope should be able to handle its purpose and duties with ease. These are just standard white envelopes, so on the inside they are white as well. It features a straight peel and seal flap that safely encloses everything inside. It is perfect for business mailing, document organization, file storage, and more. It features a wallet flap end and a smooth finish for seamless addressing.

Why We Like This:

Very neatly packed and good size
One of the new comers and featured product

Best With most digital And offset printers: Envelopes.Com 9x12 Open End Envelope

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The envelopes.com 9x12 open end envelope's material feels more premium than its price would suggest. These open-end 9” x 12” catalog envelopes have a convenient vertical design. It is made from heavyweight lux paper stock with a sturdy construction, these envelopes are thick and durable, making them perfect for things like letters, professional mailings, personal mail, or catalogs. It is on the short side, helping to keep things organized and from falling out after opening.

These envelopes are printable on both digital and offset commercial printers. It is compatible with most digital and offset printers, these envelopes are easy to customize. These are printer friendly, so you can use your home laser or inkjet printer to address them. It is made for compatibility with most printer models.

Why We Like This:

Gel pens, calligraphy and other hand crafts look amazing
Delivers what they promise

Best For promotional purposes: generic 9x12 Open End Envelope

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The generic 9x12 open end envelope's material feels more premium than its price would suggest. These envelopes are great for printed catalogs and programs, brochures or promotional designs. Each of these open-end envelopes features a commercial style flap and a reliable gum closure to keep items secure as they travel through the mail. These are especially good for mailing documents such as bill, bank statements and invoices. The standard envelope size fits nicely into most filing cabinets, making it easy to organize and retrieve.

These are made with a high-quality product so you get the best quality envelope you can get. These are also constructed with string on one side to keep pages together as well as provide dimensional stability. It is perfect for your promotional campaigns.

Why We Like This:

Good investment for long term
New and hot release

The 8 Best 9x12 Open End Envelopes (2023 reviews)

Our Top Picks:

Best Overall: Aimoh 9x12 Open End Envelope

Best For sending confidential documents: blue Summit supplies Strong Seal

Best For Quick sealing: Valbox 9x12 Open End Envelope

Best For certificates: Amazon Basics 9x12 Open End Envelope

Best For monthly expense Envelopes: blue Summit supplies 9x12 Open End Envelope

Best For document organization: JAM Paper 9x12 Open End Envelope

Best With most digital And offset printers: Envelopes.Com 9x12 Open End Envelope

Best For promotional purposes: generic 9x12 Open End Envelope

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