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10 Best 9 x 12 self seals of 2026
Save up to 20% off
1
AimohAimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
9.8Exceptional
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2
AimohAimoh 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)
9.7Exceptional
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3
ColumbianColumbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)
9.6Exceptional
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4
ColumbianColumbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)
9.5Excellent
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5
Amazon BasicsAmazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, 100-Pack, White
Key specs-
size:100-Pack
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color:White
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shape:Rectangular
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material:Paper
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closure:Peel-and-seal
9.4Excellent
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Amazon BasicsAmazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, 100-Pack, White
Key specs-
size:100-Pack
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color:White
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shape:Rectangular
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material:Paper
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closure:Peel-and-seal
9.3Excellent
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7
AimohAimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
20% Off9.1Excellent
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8
ColumbianColumbian 9 x 12 Catalog Envelopes, 30 Pack, Document Envelopes with Self Seal Closure, Heavyweight 28 lb Paper, Self Sealing Envelopes for Mailing, Filing and Organizing, Brown Kraft
9.0Excellent
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9
ColumbianColumbian 9 x 12 Catalog Envelopes, 30 Pack, Document Envelopes with Self Seal Closure, Heavyweight 28 lb Paper, Self Sealing Envelopes for Mailing, Filing and Organizing, Brown Kraft
8.9Very Good
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10
AimohAimoh 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)
20% Off8.8Very Good
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