20x24x4 Expansion Poly Mailers 2.5 Mil Self-Seal White, 100/Case
$53.04
/ case of 100$0.53 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" × 24" × 4"
Board / material
2.5 Mil Polyethylene
Color
White
Freight class
Class 60
Specifications
| Inside dimensions | 20" × 24" × 4" (L × W × H) |
|---|---|
| Board / material | 2.5 Mil Polyethylene |
| Color | White |
| Sold as | Case of 100 |
| Order in multiples of | 1 |
| Case weight | 10.3 lb |
| Outer carton (shipping) | 21.5 × 14.25 × 2.75 in |
| LTL freight class | Class 60 |
| GTIN | 841436052832 |
| SKU | EPM20244 |
About this item
SKU EPM20244 — 20" × 24" × 4", 2.5 Mil Polyethylene, White. Sold as a case of 100, shipped from US warehouses.
The 20 x 24 x 4 in white poly mailer is for apparel, soft goods, catalogs, returns, and lightweight e-commerce shipments. Listed dimensions are 20 x 24 x 4 in; board and format details include 2.5 Mil, self-seal; sold by the case; listed weight 10.3 lb. Use the 20 x 24 x 4 in format as a mailing carton, presentation mailer, or compact e-commerce shipper after checking the product's packed depth.
Large poly mailers: Good fit for shipping clothing, apparel, soft goods, returns, catalog packs, and other non-fragile ecommerce orders. These mailers help ecommerce teams and small businesses choose protective, right-sized packaging for common fulfillment workflows.
Nearby exact-spec options
Use these when the size, material, pack quantity, or workflow is close but not identical.
Common questions
Can these mailers accommodate thicker or heavier products?
Yes. The 4-inch gusseted bottom expansion allows you to safely ship items up to 4 inches thick, including hardbound books, binders, and bundled catalogs. The high-strength seams and 2.5 mil polyethylene construction support products weighing up to approximately 5 pounds without compromising seal integrity.
Will labels and custom branding adhere properly to these mailers?
Absolutely. The white outer surface is specifically designed for excellent label, ink, and stamp adhesion. This makes them ideal for custom branding, barcoding, and fulfillment operations where professional presentation is critical to brand perception.
Are these mailers truly moisture and puncture resistant?
Yes. The 2.5 mil polyethylene material provides puncture, tear, moisture, and tamper resistance. The self-seal closure creates an airtight barrier that protects contents from environmental exposure during storage and multi-leg shipping routes.
How easy is it for customers to open these mailers?
The double perforation tear strip is engineered for effortless, clean opening without requiring tools or scissors. Customers can quickly access contents while the perforation design prevents accidental ripping of the mailer itself or product inside.
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.