10x13 vs 9x12 Poly Mailers

Not sure which to pick? Use the Packaging Tools to get a recommendation.

Choose 10x13 when your item fits the 10x13 footprint. Choose 9x12 when your item needs more room in the 9x12 footprint.

10x13 options

• 10x13" White Tyvek¬Æ Self-Seal Flat Envelopes - Tear & Puncture Resistant, Case of 100
  $45.05In stock
• 10x13" 2.5 Mil White Poly Mailers with Tear Strip - Case of 500
  $48.43In stock
• 10x13" Clear View Poly Mailers, 2.5 Mil Self-Seal, Case of 500
  $69.77In stock
• 10x13 Self-Seal Poly Mailers 2.5 Mil White - 1000 Pack
  $101.37In stock
• 10x13 Tyvek First Class Mailers, 14lb Olefin, Self-Seal, Case of 100
  $50.30In stock
• 10x13 Blue Poly Mailers Self-Seal 2.5 Mil - Case of 100
  $22.09In stock

9x12 options

• 9x12" 2.5 Mil Self-Seal Poly Mailers - Puncture Resistant, 100 Pack
  $17.00In stock
• 9x12 White Poly Mailers with Tear Strip - Self-Seal, 2.5 Mil, 500/Case
  $41.20In stock
• 9x12 Tyvek First Class Mailing Envelopes - Tear & Moisture Resistant, Case of 100
  $45.64In stock
• 9x12" Self-Seal Poly Mailers 2.5 Mil Polyethylene - Case of 1000
  $87.76In stock
• 9x12 White Tyvek Self-Seal Envelopes - Tear Resistant, Case of 100
  $43.78In stock
• 9x12" Clear View Poly Mailers, 2.5 Mil Self-Seal, Case of 500
  $60.43In stock

When to use

• Deciding between 10x13 and 9x12 for a new SKU or packaging refresh.
• Cost, protection, and throughput tradeoffs.

When not to use

• Edge cases where neither option fits — check the related guides.

Frequently asked