📬 Secure Your Secrets in Style!
The 500 No. 9 Self Seal Security Envelopes are designed for secure mailing of important documents. With a size of 3 7/8" x 8 7/8", these envelopes are perfect for standard 8.5" x 11" papers. The self-seal feature ensures a strong closure without the need for moisture, while the security tint keeps your contents private. Ideal for both home and business use, they are printer-friendly and made from durable 24 lb paper, making them a reliable choice for all your mailing needs.
| Manufacturer | Blue Summit Supplies |
| Brand | Blue Summit Supplies |
| Item Weight | 5.68 pounds |
| Package Dimensions | 12.17 x 9.45 x 4.29 inches |
| Color | White |
| Closure | Self-Seal |
| Shape | Rectangular |
| Material Type | Paper |
| Number of Items | 500 |
| Size | One Size |
| Manufacturer Part Number | BSS-92588-034 |
T**E
Works great for return mailings. Fits well inside #10 envelopes.
Needed for use as a return envelope. Worked well in my printer. No jams. Worked as intended with very good sealing.
R**K
Just what I needed
I include #9 envelopes as a return envelope so I don't have to fold them like a #10. This size is not as easy to find, and the price of these was great!
O**A
Good quality
I like the self seal aspect. Use them for letter writing
L**L
Maybe flaw hard to open glue seemed to seep
Product was stuck to open very difficult like maybe a product flaw
J**R
Return envelope is for us
There’s a perfect size to go in your other envelopes and help us receive our bills back in the mail. Easy to use.
N**
great to find #9 self seal envelopes
Great to finally find #9 self seal security envelopes, had not found them in supply stores. We enclose them in invoices and other mailings for a small business.
I**S
They work perfect
They seal great but if you screw up or leave something out, you got about 5 min to pull open envelope without ruining it. After that, you need a new one;)
G**N
Perfect
Great for the price
Trustpilot
2 months ago
1 day ago