Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Advertising Disclosure
9 Best 9 x 12 self seals of 2026
Save up to 10% off
Best Choice1
AimohAimoh 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)
9.9Exceptional
-
-
Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
Trusted insights AI and human analysis guide your decisions, reflecting real user prioritiesReal users impact
Thousands of users trust our site daily
- Based on millions of stores and reviews
- Shoppers influence our rankings
Analyzing top stores
Value for Money2
AimohAimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
9.7Exceptional
-
3
Amazon BasicsAmazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, 100-Pack, White
Key specs-
size:100-Pack
-
color:White
-
shape:Rectangular
-
material:Paper
-
closure:Peel-and-seal
9.6Exceptional
-
4
ColumbianColumbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)
10% Off9.5Excellent
-
5
ColumbianColumbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)
9.4Excellent
-
-
See Today’s Deals & Prices
6
ColumbianColumbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)
10% Off9.3Excellent
-
7
AimohAimoh 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)
10% Off9.2Excellent
-
8
AimohAimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
9.0Excellent
-
9
AimohAimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
10% Off8.8Very Good
-
