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Your #1 Supplier of Business Envelopes & Shipping Mailers

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Poly Flat Expansion Envelopes

  • 10 x 13 x 2 Poly Flat Expansion Mailer - Mailers Direct™

    10 x 13 x 2 Poly Flat Expansion Mailer

    Mailers Direct™
    from $11.59

    Poly Expansion Mailers  - Perfect for apparel , soft goods , pre-packaged and bulkier items that don't need cushioning.  Self-Seal tamper evident ...

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    from $11.59
  • 11 x 13 x 4 Poly Flat Expansion Mailer - Mailers Direct™

    11 x 13 x 4 Poly Flat Expansion Mailer

    Mailers Direct™
    from $13.64

    Poly Expansion Mailers  - Perfect for apparel , soft goods , pre-packaged and bulkier items that don't need cushioning.  Self-Seal tamper evident ...

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    from $13.64
  • 13 x 16 x 4 Poly Flat Expansion Mailer - Mailers Direct™

    13 x 16 x 4 Poly Flat Expansion Mailer

    Mailers Direct™
    from $18.08

    Poly Expansion Mailers  - Perfect for apparel , soft goods , pre-packaged and bulkier items that don't need cushioning.  Self-Seal tamper evident ...

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    from $18.08
  • 14-1/2 x 20-1/2 x 7 Poly Flat Expansion Mailer - Mailers Direct™
    from $55.36
  • 15 x 20 x 4 Poly Flat Expansion Mailer - Mailers Direct™

    15 x 20 x 4 Poly Flat Expansion Mailer

    Mailers Direct™
    from $23.68

    Poly Expansion Mailers  - Perfect for apparel , soft goods , pre-packaged and bulkier items that don't need cushioning.  Self-Seal tamper evident ...

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    from $23.68
  • 20 x 24 x 4 Poly Flat Expansion Mailer - Mailers Direct™

    20 x 24 x 4 Poly Flat Expansion Mailer

    Mailers Direct™
    from $37.30

    Poly Expansion Mailers  - Perfect for apparel , soft goods , pre-packaged and bulkier items that don't need cushioning.  Self-Seal tamper evident ...

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    from $37.30
  • 24 x 21 x 6 Poly Flat Expansion Mailer - Mailers Direct™
    from $68.26
  • 26 x 28 x 6 Poly Flat Expansion Mailer - Mailers Direct™

    26 x 28 x 6 Poly Flat Expansion Mailer

    Mailers Direct™
    from $55.83

    Poly Expansion Mailers  - Perfect for apparel , soft goods , pre-packaged and bulkier items that don't need cushioning.  Self-Seal tamper evident ...

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    from $55.83
  • 28 x 30 x 6  Poly Flat Expansion Mailer - Mailers Direct™
    from $113.75
  • 30 x 36 x 6 Poly Flat Expansion Mailer - Mailers Direct™

    30 x 36 x 6 Poly Flat Expansion Mailer

    Mailers Direct™
    from $84.80

    Poly Expansion Mailers  - Perfect for apparel , soft goods , pre-packaged and bulkier items that don't need cushioning.  Self-Seal tamper evident ...

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    from $84.80
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