Customer Reviews for Staples Self Seal Self Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (ST28731-CC)
14% off of Staples Self Seal Self Seal Security Tinted #9 Double Window Envelopes, 3 7/8" x 8 7/8", White, 500/Box (ST28731-CC)
Item # : 1775861
Model # : ST28731-CC
Send mail easily with this 500-pack of Staples security-tinted double-window self-sealing #9 envelopes.
- Pressure Sensitive Adhesive
- #9 business envelopes are suitable for all your mailing needs
Price is $29.99, Regular price was $34.99, You save 14%
Unit of measure 500/Box Price per unit $0.06/Envelope
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226 reviews
Most helpful positive review
Posted Apr 24, 2020
Great for QB invoices
I wish it had been easier to find the right one for QuickBooks invoices, but most reviews don't mention that. I have purchased these envelopes in other sizes but they were check envelopes. These are the ones that are the correct size for QuickBooks invoices. Thank goodness I found them.
VS
Most helpful critical review
Posted Jan 2, 2020
Will not order again
The checks do not line up in the windows correctly (i.e - the Pay to the Order of line appears in the top window, the address appears in the lower window as does the Memo line.
VALERIE R.
Verified Buyer
Posted Mar 30, 2025
No seal self seal
Doesn’t really seal great I won’t buy again.
0up votes 0
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Staples Customer
Reviewed at:
Quill
Posted Mar 18, 2025
Price up but Item quality down
The quality of this envelope has declined in recent months. I just used the last of the ones I purchased in 2024 and ordered 2 more boxes. I will be returning one of them as I found most of them with very little sealant and most of them crumpled up. It was hard to put mail in the envelopes as well. Really slowed our process down so I was only able to use some of the one...
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Stephanie P.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Mar 3, 2025
REVIEW
These envelopes are horrible, they don't seal which means i have to tape my statements....
0up votes 0
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Joni
Verified Buyer
Reviewed at:
Quill
Posted Feb 21, 2025
Terrible product!
I did not get to open and use these envelopes until the return period was up. I will not be able to use the majority of them. The clear windows are dried and flake off and the folding seal on the back does not fully unfold so it has terrible wrinkles when you try to seal the envelope. Also the parts of the clear windows that may have stayed attached are foggy and you...
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KS
Posted Feb 11, 2025
Poor Quality and Fit for Accounting Software
The window on these envelopes is too far down, and there's no way to align our checks with the windows so you can see the address but can't see the dollar amount. Many envelopes were stuck together or stuck partway closed, so it was hard to get checks into them anyway. Will not purchase again.
1up votes 1
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STEPHANIE M.
Verified Buyer
Posted Jan 30, 2025
AWFUL
The new design on these is awful. I started buying the Staples brand a few years ago because they were great quality and affordable. My last box was a totally new design and it's terrible! The self-seal is more like a post-it note. You can easily reopen and reseal it with no issue. (Not a feature you want for mailing checks.) And half the envelopes were stuck together. ...
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Makayla
Verified Buyer
Reviewed at:
Quill
Posted Jan 28, 2025
Envelopes come pre sealed
The envelopes were already stuck together and we had to un-seal them and then fill and reseal. Then the don't stick properly.
2up votes 2
0down votes 0
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Marci B.
Posted Jan 20, 2025
Poor Quality Envelops
The tax envelops are stuck together and rip when you separate them. After separated the inside window film is stuck to the inside of the envelopes and forms will not slide in. When you unstick the film, a layer of the safely paper remains and blocks the address of the recipient.
2up votes 2
0down votes 0
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VISHALI P.
Verified Buyer
Posted Jan 17, 2025
DON'T WASTE YOUR TIME WITH THESE ENVELOPES
I've been using these envelopes for over 8 years for statements. The new design is horrible. The self-adhesive does not seal well. Also, statements don't slide in envelope easily (never had an issue in the past). It's almost like the bottom inside left corner is stuck together. I will not be buying these again! Save your time and frustration by buying something else.
3up votes 3
0down votes 0
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Allison R.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Jan 14, 2025
poor quality
about 15% of the box was unusable due to glue sticking envelopes together and torn windows
3up votes 3
0down votes 0
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Brenda
Verified Buyer
Reviewed at:
Quill
Posted Jan 13, 2025
Window Envelopes
The envelope itself is fine but I am having trouble with some of them sealing. I am having to add some tape sometimes
2up votes 2
0down votes 0
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Derik
Verified Buyer
Reviewed at:
Quill
Posted Jan 13, 2025
Absolutely the worst redesign!!!
These envelopes were better prior to the redesign. The self seal is defective, does not seal!!!
3up votes 3
0down votes 0
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Heather K.
Posted Jan 8, 2025
cheaply made - don't buy these!
Poorly made. They don't line up to seal. Self-adhesive does not extend to bottom of flap.
3up votes 3
0down votes 0
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Allison L.
Verified Buyer
Posted Jan 2, 2025
Staples Self Seal Double Window Envelopes
Self-adhesive does not extend to bottom of flap and does not seal well for mailing.
4up votes 4
0down votes 0
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Staples Customer
Verified Buyer
Posted Dec 31, 2024
Do Not Buy These
I had these on a subscription and the most recent delivery was very different from the previous ones as shown in the picture below. As described in other reviews, the gum on the flap does not line up with the strip on the envelope, the paper is super thin and they are folded crookedly. I called in for a free replacement but think I will be looking for a new supplier. In...
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4up votes 4
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OFFICE S.
Posted Dec 23, 2024
The redesign is AWFUL!!
Flimsy, poor adhesive. Not wanting to send checks in such a shoddy envelope
4up votes 4
0down votes 0
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Deanna
Verified Buyer
Reviewed at:
Quill
Posted Dec 20, 2024
Worst Envelopes Ever!!
These are gummed envelopes, the gummed areas dont match up so it wont seal, I had to tape all the envelopes together. They are also crooked and not put together properly. They need to go in the garbage!!
3up votes 3
0down votes 0
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Abigail S.
Reviewed at:
Staples Advantage
Posted Dec 13, 2024
Not sticky
We have ordered and replaced two boxes now where at least half of the envelopes weren't sticky, or the adhesive strip didn't align, and we had to use tape or glue to close the envelope. It definitely seems like something went wrong in the last manufacturing shipment due to the other reviews around this same time.
2up votes 2
0down votes 0
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Staples Customer
Verified Buyer
Posted Nov 19, 2024
Cheap Envelopes!
Worst envelopes ever. They are ultra thin with one lower corner still sealed and when you try to get it unsealed the whole envelope rips. The self sealing is completely dried out so it does not self seal
3up votes 3
0down votes 0
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BEVERLY W.
Verified Buyer
Posted Nov 18, 2024
Horrible New Design
I used to love these envelopes before they were redesigned. They do not seal where they're supposed to. Awful!!!
3up votes 3
0down votes 0
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