Good fit for shipments or presentation packs where the product fits the listed inside dimensions and closure style. Confirm inside dimensions, board type, closure, color, and whether the item needs extra cushioning.

Best For
How to choose
Specs at a Glance
| Material | ECT-32-B Kraft Corrugated |
| Dimensions | 9" L 4" W 4" H |
| Construction Type | One-Piece Fold-and-Tuck Mailer |
| Bundle Quantity | 50 Mailers per Bundle |
| Recyclable | Yes |
Common Use Cases
- Packing small ecommerce orders, kits, samples, gifts, documents, or parts in a folding mailer box.
- Standardizing a branded or unbranded mailer-box size for repeat shipments.
- Reordering by exact product link, SKU, or sold-as quantity.
- Adding the item to a mixed-SKU or recurring supply request when quantity, delivery ZIP code, or timing matters.
What You'll Receive
- This listing is sold as 50 Pack. Check the current product page for variant details, price, availability, and pack count before checkout.
Shipping & Packaging
Frequently Asked Questions
ECT-32-B indicates 32-point Edge Crush Test strength with B-flute corrugation, ideal for moderately fragile items and repeated stacking in distribution chains. This rating balances protection, weight, and cost-efficiency for small parcel shipping.
These fold-and-tuck mailers assemble in seconds without tape, glue, or staples. For high-volume fulfillment centers processing 1,000+ units daily, this eliminates 3-5 minutes per box versus traditional tape-seal cartons, saving significant labor costs.
Yes. The ECT-32-B crush-resistant construction and double-wall design on front and sides protect stacked inventory. However, stack height recommendations depend on item weight, typically safe for 4-6 bundles high in climate-controlled warehouses.
Flat-packed mailers reduce dimensional weight significantly compared to pre-assembled boxes. A pallet of 1,000 units ships in a fraction of the cubic footage, lowering both inbound freight charges and warehouse storage footprint by 60-70%.
Technical Specifications
| Construction Type | One-Piece Fold-and-Tuck Mailer |
| Bundle Quantity | 50 Mailers per Bundle |
| Recyclable | Yes |
| Color | Kraft |
| Strength / Material | ECT-32-B Corrugated |
| Dimensions (Internal) | 9" × 4" × 4" (L × W × H) |
Shipping Information
Outer Carton Dimensions
9" × 4" × 4" (L × W × H)
Unit of Measure
BUNDLE
Qty Per Shipping Unit
50 PER BUNDLE
LTL Freight Class
Class 125
Delivery Method
Shown at checkout
Processing and delivery timelines vary by product, warehouse, order size, and destination. Freight-sensitive or oversized items may require LTL delivery or a custom quote before shipment.
Checkout shows available shipping options for the selected SKU and quantity. Use the shipping and refund policy links for current policy details before ordering.
For larger, recurring, freight-sensitive, or mixed-SKU orders, send the SKU or product link, quantity, delivery ZIP code, receiving notes, and timing to support@packrift.com.
ORDER SUPPORT
Product Support
Specs, case quantities, and availability are listed on each product page. For bulk, mixed-SKU, or LTL freight orders, email support@packrift.com with the SKU, quantity, and delivery ZIP.
Use product support for fit, larger or recurring order, return, or order-issue questions. When price and Add to Cart are shown, checkout remains the direct ordering path.
Need a sample, fit check, or substitution review? Contact product support with the SKU, selected option, order quantity, and use case. Support will confirm the available path for that item.
Contact product supportBuyer guides
Buying notes and spec resources stay here instead of taking space above the cart.
Use this product as the source
9x4x4 Kraft Corrugated Mailers ECT-32-B Crush Resistant - 50 Pack
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Compare usable size, padding, material, closure, and case quantity.
Product support Compare mailer vs boxUse this guide when item thickness or edge protection affects fit.



