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10 Best 9 x 12 self seals of 2025

Explore up to 40% off
  • Best Choice

    1

    Amazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, Brown Kraft, 250-Pack
    Amazon Basics

    Amazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, Brown Kraft, 250-Pack

    9.9
    Exceptional
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  • Value for Money

    2

    ValBox 9x12 Self Seal Catalog Envelopes 250 Packs White Envelopes with Peel and Seal Flap for Mailing, Organizing and Storage
    ValBox

    ValBox 9x12 Self Seal Catalog Envelopes 250 Packs White Envelopes with Peel and Seal Flap for Mailing, Organizing and Storage

    9.6
    Exceptional

  • 3

    Aimoh 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)
    Aimoh

    Aimoh 9 X 12 Self-Seal Brown Kraft Catalog Mailing Envelopes - 28lb - 100 Count, 9x12 Inch (38300)

    9.5
    Excellent

  • 4

    Aimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)
    Aimoh

    Aimoh 100 9 x 12 SELF Seal Security White Catalog Envelopes - 28lb - Security Tinted, Ultra Strong Quick-Seal, 9x12 inch (38100)

    9.3
    Excellent

  • 5

    Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)
    Columbian

    Columbian 9 x 12 Security Envelopes, 100/Box, 9 x 12 Inches, Release & Seal Self Seal, SimplySafe Tamper Evident Pull Strip, White (COLO930)

    9.2
    Excellent
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  • 6

    Columbian 9 x 12 Catalog Envelopes with Self Seal Closure, 28 lb Brown Kraft, for Mailing Flat Letter Size Documents or Photos, 30 Per Pack (COLO401)
    Columbian

    Columbian 9 x 12 Catalog Envelopes with Self Seal Closure, 28 lb Brown Kraft, for Mailing Flat Letter Size Documents or Photos, 30 Per Pack (COLO401)

    9.1
    Excellent

  • 7

    Amazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, 100-Pack, White
    Amazon Basics

    Amazon Basics Catalog Mailing Envelopes, Peel and Seal, 9x12 Inch, 100-Pack, White

    9.0
    Excellent

  • 8

    100 9 x 12 Self Seal Security White Catalog Envelopes, Ultra Strong Quick-Seal, for Secure Mailing, Documents, Photos, Heavy 28-lb Paper (ME000001)
    LUREME

    100 9 x 12 Self Seal Security White Catalog Envelopes, Ultra Strong Quick-Seal, for Secure Mailing, Documents, Photos, Heavy 28-lb Paper (ME000001)

    40% Off
    8.9
    Very Good

  • 9

    Quality Park 9" x 12" Self-Seal Catalog Envelopes, for Mailing, Organizing and Storage, Brown Kraft, Heavy 28-lb Paper, 100 Per Box (QUA44562)
    Quality Park

    Quality Park 9" x 12" Self-Seal Catalog Envelopes, for Mailing, Organizing and Storage, Brown Kraft, Heavy 28-lb Paper, 100 Per Box (QUA44562)

    13% Off
    8.6
    Very Good

  • 10

    Columbian 9 x 12 Catalog Envelopes, Self Seal Closure, 28 lb White Wove, for Mailing Flat Letter Size Documents, 100 Per Box (COLO342)
    Columbian

    Columbian 9 x 12 Catalog Envelopes, Self Seal Closure, 28 lb White Wove, for Mailing Flat Letter Size Documents, 100 Per Box (COLO342)

    8.4
    Good