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Amazon Basics #6 3/4 Security-Tinted Envelopes, 300-Pack

Amazon Basics #6 3/4 security-tinted envelopes come in a 300-pack with a self-seal closure. The listing describes an interior tint for privacy and gives each envelope’s dimensions as 3-5/8 by 6-1/2 inches, making this a fit for recurring mailing of checks, invoices and other small documents.

At a glance

  • Self-seal closure is described as needing no moisture.
  • Interior security tint is intended to help keep contents private.
  • The listing recommends them for checks, invoices and other confidential documents.
  • 300 envelopes suit regular household or office mailing.
Price
$20.43Save 15%

Reference price: $24.06

Price checked: Nov 13, 2026

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Often bought together

Pros and cons

Pros

  • Self-seal closure avoids licking or wetting the flap.
  • Security-tinted interiors address visibility of document contents.
  • The 300-count pack is suited to repeated mailing rather than occasional single letters.

Technical specifications

13 specifications
Identity and format
BrandAmazon Basics
Envelope style#6 3/4
ColourWhite
ShapeRectangular
Quantity300
ClosureSelf-Seal
UseMailing
Dimensions and installation
Dimensions listed16.51 x 9.22 x 5.33 cm; 17.69 g
Weight listed18 g
Individual envelope dimensions3-5/8 by 6-1/2 inches each
Materials and protection
Material listedPaper
Paper weight24-pound white woven paper
Security featureSecurity Tint

What to know before buying

Listing details to confirm

The listing gives individual dimensions as 3-5/8 by 6-1/2 inches and package dimensions as 16.51 x 9.22 x 5.33 cm, while a separate item-weight field says 18 g and the package-details line ends in 17.69 g. Confirm the intended package measurements and weight if they matter to storage or shipping. Customer feedback is mixed on size and adhesion, so confirm the #6 3/4 format suits your documents and allow for variation in sealing experience.

Who is it for?

A good fit for

  • Households or offices mailing checks, invoices or other small confidential documents.
  • Buyers who want a bulk pack of white self-seal envelopes with an interior security tint.

Less suited to

  • People who need a different envelope size or require consistently dependable adhesion.
Amazon Basics #6 3/4 Security-Tinted Envelopes, 300-Pack · photo 2
Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 18,525 ratings
  • 5 stars74%74%
  • 4 stars14%14%
  • 3 stars5%5%
  • 2 stars2%2%
  • 1 star5%5%

Customer feedback reports positive impressions of value, sealing and the security feature, alongside mixed experiences with size and adhesion. The listing’s 300 count and self-seal design suit repeat mailing, but buyers should confirm the #6 3/4 dimensions fit their documents and note that adhesion experiences are not uniform. Aggregate ratings are mostly five-star, but they do not explain the less favourable or mixed experiences.

Positive themes

  • Customers describe the envelopes as secure and appreciate the security feature.
  • Feedback reports positive sealing and good value.

Mixed feedback

  • Customer feedback is mixed on envelope size.
  • Customer feedback is also mixed on adhesion.

Frequently asked questions

Do these envelopes need moisture to seal?

The listing says the peel-and-seal closure requires no moisture.

What are the envelope dimensions?

The feature details say each measures 3-5/8 by 6-1/2 inches. A separate package-dimensions field and the listed weight values are inconsistent, so consult the notes if package measurements matter.

Are the envelopes intended for confidential documents?

The listing says an interior security tint helps keep contents private and recommends them for checks, invoices and other confidential documents.

Amazon Basics #6 3/4 Security-Tinted Envelopes, 300-Pack · photo 3
Additional product photo 3

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