Home > Business Mailing Envelopes > #9 Double Window Security Envelopes, HERKKA No.9 Double Window Business Envelopes Designed for Quickbooks Invoices and Business Statements - Number 9 Size 3 7/8 Inch X 8 7/8 Inch - 24 LB - 500 Pack ; HERKKA

#9 Double Window Security Envelopes

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20,207 reviews covering 45 products for the category Business Mailing Envelopes

Experiential insights by users

About #9 Double Window Security Envelopes
76% praised the high-quality paper, but 24% found it too thin
I have used this brand before and it was fine, but this set is terrible.
75% loved the crisp printing quality, while 25% experienced smudging
The top window is huge and the bottom window is too small.
77% appreciated the secure seal, though 23% experienced leaks
The envelopes are of poor quality and the address is not clear, which can cause the checks to get lost.
74% liked the added security features, although 26% found them inadequate
Envelopes are not secure enough as the post office cannot see the address clearly, which may result in the checks getting lost.
76% praised the envelope's tear resistance, but 24% experienced tears
The envelopes may not be tear-resistant and the checks may get lost due to unclear address at the post office.

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