Customer Reviews for Staples Self Seal Security Tinted #10 Window Envelopes, 4 1/8" x 9 1/2", White Wove, 500/Box (ST511290-CC)
Item # : 511290
Model # : ST511290-CC
Send checks, invoices and other sensitive documents with these Staples #10 left-window security tint self-sealing envelopes.
- Envelopes are suitable for all your mailing needs
- Made from 24 lbs. white wove paper for durability
Price is $30.19
Unit of measure 500/Box Price per unit $0.06/Envelope
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Over 30
260 reviews
Most helpful positive review
Posted Apr 10, 2019
the only one the boss likes!
super expensive compared to other envelopes, but the only on the boss likes. I feel though that one can easily reopen and close again.
VS
Most helpful critical review
Posted Feb 24, 2025
Self seal
Self seal won't adhere. It's a must on a self seal envelope.
Shandi G.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Jul 9, 2025
Window not in the right spot
We've been purchasing this item for years, and have also noticed that over the past several months many of the envelopes don't line up with the printed address. This led to us having to throw away around 1/3rd of the box each time. Luckily we just tried another and it doesn't have the same issue. If you're having the same problem these are what we're ordering now: https...
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DIANA D.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Jun 5, 2025
Really easy to use. I like them.
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PAULA K.
Verified Buyer
Posted May 19, 2025
FINE PRODUCT
I'VE BEEN USING THESE FOR YEARS AND HAVE ALWAYS BEEN PLEASED WITH THEM AND WITH SERVICE WE RECEIVE FROM STAPLES
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Lindsey C.
Verified Buyer
Posted Mar 17, 2025
something has changed
I have ordered these before and they were fine. I am a Quickbooks user and this batch the window no longer lines up to show my addresses that are printed on my checks. I have to fold the checks under to make sure they show out the window. They also do not seem to seal as well. They come back open if I don't seal them multiple times and put them under a lot of pressure...
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Kristi W.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Feb 26, 2025
Window placement has moved. Won't work for checks.
I have been ordering these for years. We use them for our printed checks. The last box I ordered has a new layout. Along with the "no moisture needed" text on the back, the window is much lower and narrower than it used to be.
In my picture the top envelope shows the "old" format, and the bottom envelope shows the current format. It won't work for us. Returning and lo...
In my picture the top envelope shows the "old" format, and the bottom envelope shows the current format. It won't work for us. Returning and lo...
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Lisa C.
Reviewed at:
Staples Advantage
Posted Feb 25, 2025
Reason damaged
The delivery driver left these outside in the rain. Never opened the door to notify of delivery.
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JACKIE M.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Feb 24, 2025
Self seal
Self seal won't adhere. It's a must on a self seal envelope.
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Staples Customer
Verified Buyer
Posted Feb 13, 2025
Self Seal does not stick
The self-sealing flap does not stick/seal .
I end up having to tape shut every single time. I would have returned but I needed to use them straight away so I am stuck. Buy something else.
I end up having to tape shut every single time. I would have returned but I needed to use them straight away so I am stuck. Buy something else.
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Staples Customer
Posted Jan 25, 2025
Self seal does not stick
These are worthless - the seal dose not stick and we need to use tape to close them. I am surprised Staples sells such poor quality products as this.
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BONNIE M.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Jan 7, 2025
Self Seal Security Envelopes
They are what we needed and work perfectly fine.
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Staples Customer
Verified Buyer
Reviewed at:
Staples Advantage
Posted Dec 13, 2024
They Are Great
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Staples Customer
Posted Sep 13, 2024
Envelopes Do not stick
The self adhesive panel does not stick. had to use scotch tape to close envelopes
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Staples Customer
Verified Buyer
Reviewed at:
Staples Advantage
Posted Aug 17, 2024
It took about 11 weeks to arrive (envelopes are probably fine--I haven't used any yet)
The envelopes are great, I hope (I haven't used any yet because we're still going through our small box we had to buy to hold us over while we waited). I ordered these envelopes on May 26, 2024 and they arrived August 9, 2024. That's about 11 weeks, which seems a little extreme....?
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Staples Customer
Verified Buyer
Posted Aug 10, 2024
Disappointed
Despite saying you could use a printer on this, the envelope "melts" and crinkles. Does NOT work on a laser printer -- at all.
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Staples Customer
Verified Buyer
Posted Jun 9, 2024
Envelopes
Great product at a great price. I look forward to my next trip to Staples.
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CHARLES H.
Verified Buyer
Posted Apr 8, 2024
"Multi-Purpose Envelope"
Great #10 Security Window Envelope!
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GABRIELA G.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Mar 11, 2024
Not well Security
The widow was not well sealed, and you can see inside of the envelope thru an opening.
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Staples Customer
Verified Buyer
Posted Jan 15, 2024
Great envelopes!
I needed more envelopes to send church statement of giving, and didn’t want to lick or wet any more. They work great! And they arrived quick too.
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Mia M.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Sep 7, 2023
low quality item
Envelope is low quality. Paper is very flimsy and seems to be cut unevenly. The glue does not stick well. Do not waste your money.
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MIRIAM Z.
Verified Buyer
Posted Aug 22, 2023
Just what i needed these work great.
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