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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232 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.
BONNIE A.
Verified Buyer
Posted May 2, 2025
Poor quality
These are not the same quality as in the past.
1up votes 1
0down votes 0
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Jennifer
Reviewed at:
Staples Advantage
Posted May 2, 2025
Terrible
Many of the envelopes didn't have glue on them. They don't seal very well at all. When I reordered self-sealing envelopes, I thought we were going to be getting the ones we had previously. Those were much better. These envelopes stink. I won't be ordering these again.
0up votes 0
0down votes 0
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Janae C.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Apr 23, 2025
Do not seal
These are not the best and hardly seal.
0up votes 0
0down votes 0
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Lisa D.
Verified Buyer
Posted Apr 17, 2025
Glue all over
Over half of the envelope have glue from the window onto the back of the envelope, so they are not easily openable, the fact we did not figure out until after we had put stamps on them
0up votes 0
0down votes 0
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Gregory I.
Verified Buyer
Reviewed at:
Staples Advantage
Posted Apr 16, 2025
These envelopes are total garbage, I DID NOT receive the same envelopes that I had gotten in the past, as I got into the box more than half of them did not seal and needed to be taped also many of the envelopes were glues shut in the corners so that I could not put a check in them
0up votes 0
0down votes 0
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Lesie R
Verified Buyer
Posted Apr 9, 2025
POOR SEALING MECHANISM
These envelopes seal well after the flap can be raised, but the flap is often stuck or crumpled. It is very frustrating on how much time it takes to prepare these envelopes for mailing due to this flap problem. I would not buy these again.
1up votes 1
0down votes 0
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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
0down 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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2up votes 2
0down votes 0
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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
0down 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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0up votes 0
0down votes 0
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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.
2up votes 2
0down votes 0
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Staples Customer
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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2up votes 2
0down votes 0
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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.
4up votes 4
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!!!
4up votes 4
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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