9x12 vs 7.25x12 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 7.25x12 when your item needs more room in the 7.25x12 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

7.25x12 options

• 12 x 7.25" Bubble Lined Poly Mailers - Self-Seal Protection, Case of 100
  $28.00In stock
• 7.25x12" Kraft Self-Seal Padded Mailers #1 - Puncture Resistant, Case of 100
  $44.16In stock
• 7.25 x 12" Kraft Self-Seal Padded Mailers #1 - Puncture Resistant, 25 Pack
  $16.07In stock
• 7.25x12" White #1 Padded Mailers Self-Seal Fiber - 100/Case
  $48.42In stock
• 12x7.25" Bubble Lined Poly Mailers, 2 Mil Polyethylene - 25 Pack
  $13.67In stock
• 12x7.25 #1 Self-Seal Nylon Reinforced Mailers - 1000/Case
  $356.35In stock

When to use

• Deciding between 9x12 and 7.25x12 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