9x12 vs 7.5x10.5 Poly Mailers

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

Choose 9x12 when your item fits the 9x12 footprint. Choose 7.5x10.5 when your item needs more room in the 7.5x10.5 footprint.

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

7.5x10.5 options

• 7.5x10.5 White Tyvek Self-Seal Envelopes - Tear Resistant, Case of 100
  $40.48In stock
• 10.5 x 7.5" Self-Seal Poly Mailers 2.5 Mil - Tear Strip, Case of 1000
  $59.59In stock
• 7.5x10.5" Self-Seal Poly Mailers 2.5 Mil Tear Strip - 100 Pack
  $14.69In stock
• 7.5x10.5" Kraft Redi-Seal Envelopes - Press & Seal, 28 lb., Case of 1000
  $290.34In stock

When to use

• Deciding between 9x12 and 7.5x10.5 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