100% Secure Payments
Save Time and money Sending Business mail with our # 10 Security Envelopes
Quickly and easily send hundreds of business invoices or statements with our #10 envelope design and our easy to use Flip and Seal Flap.
- Just flip the bottom flap and press to seal. Really easy to use so you can send invoices and statements quickly with no wasted plastic strips from the peel and seal design
- Enough room for return envelopes so you can get paid faster
Business mail will be completely secure during transit
It can be so difficult to find envelopes that create a strong lasting seal thus forcing you to waste time using glue sticks or tape to close the envelopes. Our invoice envelopes with strong adhesives are designed to immediately create a strong seal so you do not have to worry about your contents being exposed to others.
Unlike weak sealing envelopes that allow your contents to fail out and become exposed, So much for a security envelope, Our strong seal will guarantee the safety of your contents.
Security with a Professional Look
It can be frustrating to purchase envelopes only to find them flimsy enough to have you worried about their durability during transit.
- 24 LB White Wove Paper that creates a professional look and feel from out of the box all the way to your destination
100% Money Back Guarantee
We stand behind our products completely. We understand that sometimes buying physical products can be difficult if you cannot physically see what you are buying, however, if our product is not exactly what you are looking for, or does not meet your expectation then send them back anytime for a 100 % refund.
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Description
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Product Details
Save Time and money Sending Business mail with our # 10 Security Envelopes
Quickly and easily send hundreds of business invoices or statements with our #10 envelope design and our easy to use Flip and Seal Flap.
- Just flip the bottom flap and press to seal. Really easy to use so you can send invoices and statements quickly with no wasted plastic strips from the peel and seal design
- Enough room for return envelopes so you can get paid faster
Business mail will be completely secure during transit
It can be so difficult to find envelopes that create a strong lasting seal thus forcing you to waste time using glue sticks or tape to close the envelopes. Our invoice envelopes with strong adhesives are designed to immediately create a strong seal so you do not have to worry about your contents being exposed to others.
Unlike weak sealing envelopes that allow your contents to fail out and become exposed, So much for a security envelope, Our strong seal will guarantee the safety of your contents.
Security with a Professional Look
It can be frustrating to purchase envelopes only to find them flimsy enough to have you worried about their durability during transit.
- 24 LB White Wove Paper that creates a professional look and feel from out of the box all the way to your destination
100% Money Back Guarantee
We stand behind our products completely. We understand that sometimes buying physical products can be difficult if you cannot physically see what you are buying, however, if our product is not exactly what you are looking for, or does not meet your expectation then send them back anytime for a 100 % refund.
- Reviews
- Questions

Blue Summit Supplies #10 Business Envelopes, Double Window, Security Tint, Flip & Seal
Easy ordering, no hassle shipping and a fairly quick turnaround.

Exactly what we needed
Easy to find the exact type of envelope I needed on their website. The precise measurements were helpful.

Perfect Size
Blue Summit Supplies is the only place we have found with envelopes that fit our invoices. They are a perfect fit!

Great product - even greater customer service
Working with this team is a dream! I made a mistake with my order and the team at Blue Summit was there to help me out faster than I could have imagined.

The pefect envelope
Really... what more could I say? The flap seals perfectly everytime and the windows fit my accounting documents spot on. It's the office supply I will never buy somewhere else.