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10 Best 9 x 12 self seals of 2026
Explore top picks
Best Choice1
Spartan Industrial9.9Exceptional
Spartan Industrial - 9" X 12" (1000 Count) Self Seal Clear Poly Bags with Suffocation Warning for Packaging, T Shirts - Permanent Adhesive
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Value for Money2
Bonfasvo9.7Exceptional
Bonfasvo 300 Pack 9x12 White Catalog Envelopes Peel & Seal Security Mailing Envelopes 120GSM Kraft Paper self Seal Envelopes for Invitations Papers Photos Documents Pictures Papers Files
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product dimensions: 12 x 9 x 0.1 inches
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color: White
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shape: Rectangular
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item weight: 12.73 pounds
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item model number: BO-6023
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3
Columbian9.6Exceptional
Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)
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product dimensions:7 x 3 x 0.1 inches 4.05 Pounds
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color:N/A
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shape:N/A
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item weight:N/A
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item model number:COLO930
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4
Aimoh9.5Excellent
Aimoh 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)
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product dimensions: 12.01 x 9 x 0.04 inches
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sheet size: 9-x-12-inch
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color: Yellow
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shape: Rectangular
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item weight: 3.85 pounds
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5
Amazon Basics9.3Excellent
Amazon Basics Catalog Self Seal Mailing Envelopes for Documents, Peel and Seal, 9" x 12", Brown Kraft, 250-Pack
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product dimensions: 13 x 9 x 8 inches
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color: Brown Kraft
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shape: Rectangular
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item weight: 9.61 pounds
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item model number: AMZA31
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6
Amazon Basics9.2Excellent
Amazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, Strong Quality, 28 lb White, 100-Pack
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product dimensions: 12 x 9 x 0.1 inches
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color: White
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shape: Rectangular
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item weight: 3.84 pounds
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item model number: AMZP15
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7
SUNEE9.1Excellent
SUNEE Envelopes 9x12, Self Seal Catalog Mailing Envelopes 9x12, 28LB White Kraft Paper Large Document Envelopes for Office Business Shipping, 100 Pack
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8
Aimoh8.9Very Good
Aimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
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product dimensions: 9 x 12 x 2.5 inches
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color: White
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shape: Rectangular
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item weight: 4.06 pounds
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item model number: FBA 38100
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9
ValBox8.6Very Good
ValBox 9x12 Self Seal Catalog Envelopes 250 Packs White Envelopes with Peel and Seal Flap for Mailing, Organizing and Storage
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product dimensions: 12 x 9 x 0.04 inches
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color: White
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shape: Rectangular
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item weight: 11.03 pounds
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item model number: VB026
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10
Columbian8.5Good
Columbian 9 x 12 Catalog Envelopes with Self Seal Closure, 28 lb Brown Kraft, for Mailing Flat Letter Size Documents or Photos, 100 Per Box (COLO341)
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