20x20x4 Kraft Self-Seal Deluxe Literature Mailers 25-Pack MFL20204K
$140.14
/ bundle of 25$5.61 per mailer
Request bulk pricing
Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
20" × 20" × 4"
Board / material
ECT-32-B Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 20" × 20" × 4" (L × W × H) |
|---|---|
| Board / material | ECT-32-B Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 29.43 lb |
| Outer carton (shipping) | 52.75 × 38.75 × 2.75 in |
| LTL freight class | Class 125 |
| SKU | MFL20204K |
About this item
SKU MFL20204K — 20" × 20" × 4", ECT-32-B Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
20x20x4" kraft self-seal literature mailers in corrugated board, packed 25 per pack (SKU MFL20204K); this is a second listing of the same BOX case stock at the same price.
Sized for shipping and fulfillment work; the self-seal closure needs no tape. Order by the pack of 25.
Common questions
Do these mailers require tape or glue to assemble?
No. The front outside tuck closure with protective side flaps assembles in seconds without tape, glue, or staples, reducing labor time and assembly costs while maintaining professional presentation.
What level of puncture and crush resistance does ECT-32-B provide?
ECT-32-B corrugated construction delivers crush resistance and puncture protection, safeguarding documents and marketing materials during transit while maintaining structural integrity in warehouse stacking scenarios.
Are these mailers suitable for flat documents or thicker content?
Yes. The 4" depth accommodates flat literature, catalogs, and documents up to approximately 3.5" thickness, making them versatile for various fulfillment needs including marketing collateral, samples, and promotional packages.
Can I use these mailers for customer-facing shipments?
Absolutely. The natural kraft finish projects a premium, eco-conscious brand image, ideal for direct-to-consumer e-commerce brands that want professional presentation combined with sustainability messaging.
Order support
Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.