You may ask “what is a #9 envelope?”
If you’ve ever checked out an online chart of various envelope sizes, this question may have popped up in your head.
Specific Use Envelope
As you do more research on the subject, you’ll discover that some envelopes are often for more specific use.
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For example, you have 10 envelopes for oversized invitations and announcements, and also for folded letters.
But you’re better off with the smaller A6 envelopes if you’re looking for envelope for invitations, mini cards, and standard fold cards.
But these are more personal envelopes, more commonly used when you’re at home.
If you’re running a small business, then you’re probably looking forbusiness envelope options.
What is a #9 Envelope? Various Sizes
One of the most annoying issues with mail envelopes is that when you’re trying to categorize envelopes by size not everyone uses the same measurements.
Typically, when you ask “what is a #9 envelope” (when you’re looking for the dimensions), this is the answer:
It’s an envelope that’s 3⅞ inches high (from top to bottom) and 8⅞ inches wide (from left to right)”.
But some brands offer slight variations, so you may end up getting an envelope that measures 3⅝ by 8¾ inches.
Somehow, that’s also a #9 envelope even if it’s smaller.
At least you’re not dealing with a square envelope, as that’s a different matter altogether.
What is a #9 Envelope? Various Uses
There are 3 main uses for the #9 envelope.
When you’re a business that often sends letters that require replies, you want to make things easier for the recipient to send the reply you want.
This is especially true for businesses such as insurance companies, credit card companies, and banks.
It’s also important for non-profit organizations, when you’re asking for donations.
You really want to make things easier for the recipient to send in their money.
This is why companies like these use a combination of a bigger #10 outer envelope with the smaller #9 envelope.
The bigger #10 envelope measures 4⅛ by 9½ inches, and that’s large enough for the #9 envelope (3⅞ by 8⅞ inches) to fit in comfortably.
Of course, you can always just send your check in yourself without any prompting.
Just buy these by the pack and you’re all set for the foreseeable future.
Of course, you can always use this for personal letters.
If you fold a standard letter-size sheet that measures 8.5 by 11 inches into 3 equal parts, you’ll get a measurement of 3⅔ by 8½ inches.
That fits perfectly in the 3⅞ by 8⅞-inch dimensions of the #9 envelope.
What is a #9 Envelope? Various Names
Because the #9 envelope is the common envelope size for return mail, it’s often referred to as the return envelope.
But there are some other terms and acronyms you may want to use for your business.
Courtesy Reply Mail (CRM)
You want your recipient to have as little trouble as possible with the checks you want them to send.
So you do a lot of the work with the reply envelope.
In this case, the CRM is already pre-addressed so that the recipients don’t have to deal with the addressing themselves.
These also generally have the Intelligent Mail barcode (IMb), which qualifies the envelope for USPS® automated mailings.
Business Reply Mail (BRM)
The BRM also has the pre-printed address and the IMb.
But this goes even further than the CRM.
That’s because with the CRM, the mail recipient still has to pay for the postage on the envelope when they’re returning it back to the sender.
But with the BRM, the original sender pays for the postage.
That’s another hurdle eliminated for the reply (and the check).
Factors to Consider
Just how do you pick the right #9 envelope?
You should consider the following factors:
It’s incredibly annoying when you order what’s supposed to be a pack of excellent envelopes, and they arrive with issues.
Sometimes it’s a matter of getting just 99 instead of 100 envelopes.
But sometimes you have issues like envelopes sticking together.
Pick a brand with very few complaints of this nature.
This may seem weird, but some of these envelopes don’t come with the right size.
They should measure 3⅞ inches high (from top to bottom) and 8⅞ inches wide (from left to right).
You may have problems with your machine insertion tools otherwise.
You can always go with other colors, especially for promotions product brochures, or special sample packs.
More festive colors work well for greeting cards and announcements.
Just use white ink if you’re using darker colors, though white ink printing may cost you more.
When you’re dealing with checks and other serious financial stuff with your direct mail, it’s best to just use the formal white color.
Quality of the Paper
It just has to be thick enough that you can’t see through it, and it won’t tear easily.
You don’t really need specialty papers that are as tough as a Tyvek envelope.
When you’re dealing with invoices and checks, none of the recipients also notice if you’re using eco-friendly Royal Sundance or Classic Crest FSC-certified envelopes.
Your envelopes may have a transparent window or two (usually covered with plastic), but some don’t have windows.
These windows are meant to display the addresses of the sender and recipient, when they’re printed on the business stationery.
You can print those write there on your business statements and invoice to save you the trouble of labeling the envelopes.
These may be arranged in different styles, so pick the one that best suits your software.
Usually, this only displays the recipient’s address.
But sometimes, people can print one address on the envelope and the other address shows through this window.
A windowless envelope is often more affordable, but then you have to label the envelope directly with the address.
This should be effective in keeping people from reading through the envelope.
You need this feature when you deal with checks and invoices.
The envelope should seal securely, but it should be easy for you to close as well.
Number of Envelopes Per Pack
Get fewer for one-time deals, and go with 500 if you’re running a business.
Some are square, but others are pointed or triangular.
It’s often a matter of preference, but some quirky machine insertion tools may have a preference for a type of flap.
Once you’ve picked the envelope, you can then judge for yourself how easy it is to use.
You may note if you have any problems, and you decide if you can live with those issues.
Basically, if you have a good experience with the envelope then like most people, there’s a fair chance you’ll stick to the same brand and envelope.
If the problems are too serious, you should try another one.
What is a #9 Envelope You Can Use? Here’s 5 Possible Options
Check out our reviews on what is a #9 envelopesuitable for you available today.
They may have common features, such as that all of them conform to the standard 3⅞ by 8⅞-inch measurements.
Also, we picked them all in the bright white color.
These are mostly meant for more serious business purposes.
The white seems more formal and business-like, which you want if you’re dealing with invoices and checks.
“Envelopes for Secure Mailings”
Our Rating: 4.5
This comes with 500 envelopes per pack, which is a suitable number for businesses.
If you’re a small business, it can take a while before you need to buy another pack.
But when you do run out, there’s a fair chance you’ll get another pack of these.
Features Double Windows
This is probably the first thing you’ll notice here.
The windows are aligned, as they’re both ⅜ of an inch from the envelope’s left edge.
The envelope’s top window is 1-3/16 inches high and 3½ inches wide, and it’s 2 inches envelope’s bottom edge.
The envelope’s bottom window is 1 by 4 inches, and it’s half an inch from the envelope’s bottom edge.
Wave Pattern Tint
These have the security tint you need to make sure people can’t read through the envelope.
It uses a tinted wave pattern to obscure the printed info inside.
The adhesive here is super effective, and it works more quickly than moisture-activated envelopes.
It has a peel-off cover you can take off from the square flap, and then you just press the adhesive to close the envelope.
It works very quickly, but be advised that some people have found the adhesive to be too sticky.
You may end up with sticky fingers if you’re not careful.
But at least you can be sure that no one can open this envelope and then seal it again without leaving evidence of tampering.
“For Smooth Invoicing”
Our Rating: 4.5
Here’s another pack of 500 2-window envelopes that work well with QuickBooks Invoices and business statements.
You have 2 windows here, with both of them aligned and located ⅜ of an inch from the left side.
The top window measures 1-3/16 inches from top to bottom, and 3½ inches from left to right.
Half an inch below it is the bottom window, which is located also half an inch from the bottom edge.
It’s an inch high, and 4 inches long from left to right.
Interwoven Pattern/Security Tint
This envelope uses 24-pound paper, which is hard enough to peer through.
To really frustrate unscrupulous people trying to read through the envelope, it also uses a security tint with an interwoven pattern.
Securing the square flaps is easy enough with the self-seal design.
There’s no need to take off any peel-off cover.
There’s a perforation here, so you only have to flip the bottom flap and press to seal.
Once that’s done, there’s no exposed adhesive that can stick to other envelopes along the way.
“Convenient Self-Seal Envelope in Bulk”
Our Rating: 4.5
This too is of a bulk quantity of 500 like the previous two options on the list, so it will last quite a while.
It is a perfect fit for Quickbook invoices and bills, with the two windows revealing the sender and receiver addresses.
Dark Security Tint Design
The security tint on the envelope will make it harder for unauthorised people to peer into the contents inside.
That could be a nosy neighbour or a scammer.
Easy Self-Seal Design
The great thing about this envelope is the strong self-seal design.
No need for the notorious licking or the cumbersome use of glue or tape.
With these you can quickly and securely seal your envelopes for mailing.
Money Back Guarantee
The product offers 100% money back guarantee in case you are not satisfied with the product for some reason.
That should be a comfort when you’re buying 500 in a bunch.
“Perfect for Formal Announcements”
Our Rating: 4.5
We’ve often wondered why this brand uses a name that makes people think that their products can cause printer issues.
We found out that it’s because JAM stands for the initials of the founders.
In any case, these envelopes don’t cause any issues at all if you use them properly.
50 per Pack
We went with this number, just in case you find that 500 envelopes are too many.
If you’re just using these for invitations and other personal reasons, then it works out okay.
It’s not really a cost-effective number of envelopes for companies (more expensive on a per-envelope basis).
However, for personal use you don’t have to pay for envelopes you won’t use anyway.
No Windows Present
This is an old-fashioned, standard envelope with no window.
That means you have to label it separately.
But the white color and the smooth finish make it easy to work with a laser printer.
Also, it has a formal look that works well with announcements and invitations.
Heavy 28-Pound Paper
You also don’t have to worry about see-through issues too much, since it uses high-quality 28-pound paper.
It’s hard to peer through, but why worry when will probably use these envelopes for announcements and greeting cards?
Gummed Commercial Flap
This has a gummed flap that needs moisture to activate.
It works securely enough, but your recipients will like how easy it is to open.
The gunned surface leaves enough space on the left and right sides of the flap to lift, for easier access.
“Designed for Specialty Accounting Software”
Our Rating: 5.0
Lots of people who have found the other double-window envelopes frustrating have switched to this one.
This is meant for QuickBooks Checks, the Sage 100 program, and Blackbaud Software.
Irregular Window Arrangement
This has 2 windows, but they’ve been intentionally misaligned to suit your accounting software.
The top window is set half an inch from the top edge, ⅜ of an inch from the left side, and 5 inches from the right side.
It measures ⅞ of an inch from top to bottom, and 3 inches from left to right.
Then ⅞ of an inch down, you have the bottom window.
This time, it’s set ⅞ of an inch from the left side, 4½ inches from the right side, and ⅝ of an inch from the bottom edge.
This window measures an inch from top to bottom, and is 3½ inches wide.
No, they’re still the same 3⅞ by 8⅞-inch envelopes like the others.
But you’ll notice that these are different from the Intuit envelopes that are often recommended specifically for QuickBooks.
These are even roomier.
You can put in your check with it sliding, but you also have room for additional paper.
This works great if you want to include the copy of the invoice with the check.
The seal secures easily, without the need for moisture.
Just use the perforation to flip the flap and press.
This won’t tear or open easily without leaving evidence of tampering.
Also, you have the requisite security tinting here that’s crucial for envelopes with checks inside.
You have an irregular “leopard spots” pattern here in dark blue to obscure what’s inside.
Conclusion: What is a #9 Envelope?
It’s what you should use if you’re asking for a check from your recipient, or if you’re sending a check on your own.
This is a crucial reply envelope for many businesses and non-profit organizations, since it makes things a lot easier for recipients to give you their money.
So, what is a #9 envelope? It’s an investment!