12.5x19 vs 15x20 Poly Mailers

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

Choose 12.5x19 when your item fits the 12.5x19 footprint. Choose 15x20 when your item needs more room in the 15x20 footprint.

12.5x19 options

• 19 x 12.5" Kraft Self-Seal Padded Mailers - Puncture Resistant, 25 Pack
  $26.38In stock
• 19 x 12.5" Kraft Self-Seal Padded Mailers #6 - Puncture Resistant, Case of 50
  $50.29In stock
• 12.5 x 19" White Fiber Padded Self-Seal Mailers #6 - Case of 50
  $49.11In stock
• 19x12.5 Fiber Padded White Self-Seal Mailers - Puncture Resistant, 25 Pack
  $26.90In stock
• 19x12.5 Nylon Reinforced Mailers #6 Tear-Resistant - Case of 250
  $188.01In stock
• 19x12.5" Bubble Lined Poly Mailers - Shock Protection, 25 Pack
  $31.17In stock

15x20 options

• 20 x 15" Kraft Jumbo Envelopes - 28 lb. Ungummed, Case of 100
  $59.43In stock
• 15x20 Tyvek¬Æ Self-Seal Flat Envelopes White 14lb - Case of 100
  $204.78In stock
• 20 x 15" White Jumbo Envelopes - 28 lb. Paper, Case of 250
  $153.66In stock

When to use

• Deciding between 12.5x19 and 15x20 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