Home > Business Mailing Envelopes > Columbian #10 Security Envelopes, 500/Box, No Window, 4-1/8 x 9-1/2 Inches, Release & Seal Self Seal, White (COLO151) ; Columbian

Columbian #10 Security Envelopes

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20,207 reviews covering 50+ products for the category Business Mailing Envelopes

Experiential insights by users

About Columbian #10 Security Envelopes
92% praised the high-quality paper, but 8% found it too thin
I have complained about the paper quality of these envelopes. They are thin and sheer, which could be a security issue for sensitive documents, despite the similar price to other envelopes I have bought.
I have complained that the envelope crease is lower than the edge, making it harder to stuff and they are not cut as shown in the photos.
94% loved the crisp printing quality, while 6% experienced smudging
Markers will bleed right through and stain the contents of the envelope.
The paper quality of these envelopes is thin compared to others, which makes them more sheer. This could affect their printability and make them less suitable for mailing sensitive documents.
93% appreciated the secure seal, though 7% experienced leaks
The envelope's color is blotchy and too sheer, and the blue printing inside is semi-visible from outside.
I like to secure the adhesive with an extra piece of tape just to be safe.
84% liked the added security features, although 16% found them inadequate
These envelopes are not suitable for sensitive information, but can be used for other documents. This shows a lack of security feature in the envelopes.
90% liked the perfect size and fit, while 10% found it too snug
These envelopes have relatively thin paper quality compared to others.
I have complained that the envelope's crease is lower than its edge, making it difficult to stuff. Additionally, the envelope is not cut as depicted in the photos.
94% praised the envelope's tear resistance, but 6% experienced tears
I have noticed that the envelopes' paper is relatively thin compared to others, making it more prone to tearing. The envelopes' paper is thin and prone to tearing.
The crease of the envelope is lower than the edge, making it harder to stuff them and indicating poor tear resistance.

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