4x4x36 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack
$40.68
/ bundle of 25$1.63 per box
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
4" × 4" × 36"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 4" × 4" × 36" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 12.36 lb |
| Outer carton (shipping) | 40.25 × 8.5 × 8.0 in |
| LTL freight class | Class 125 |
| GTIN | 812578002399 |
| SKU | 4436 |
About this item
SKU 4436 — 4" × 4" × 36", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
The 4x4x36 ECT-32 Kraft Corrugated Boxes is a flat corrugated shipping carton for framed mirrors, wall art, signs, glass panels, and shallow framed displays. Listed specs include inside dimensions 4" x 4" x 36"; kraft material; ECT-32; bundle of 25. Use it as a shipping carton, mailing box, storage box, or e-commerce shipper when the item fits the listed dimensions.
Ideal for shipping posters, rods, artwork, banners, lighting, and rolled goods. A sturdy, reliable choice for small-business, Etsy, and ecommerce shippers.
Long shipping boxes: Good fit for shipping posters, rods, artwork, banners, lighting parts, and other long items. These corrugated boxes help small businesses, ecommerce teams, and warehouse shippers match products to the right box size for everyday fulfillment.
Common questions
What is the ECT-32 rating and why does it matter for my operation?
ECT (Edge Crush Test) 32 indicates this single-wall corrugated withstands 32 lbs of crushing force per linear inch. For B2B shippers, this rating supports safe stacking in warehouse conditions and handles typical freight handling without crushing, balancing durability with cost efficiency.
Can these 4x4x36 boxes replace mailing tubes?
Yes. The tall, narrow format and sturdy ECT-32 kraft construction provide equivalent protection to standard mailing tubes while offering better printability for branding and lower per-unit costs at volume.
How much void fill do I need for long items in a 4x4x36 box?
The vertical 36" dimension is designed to fit elongated products (rods, poles, shelving) with minimal excess length, reducing void fill material by 40 - 60% compared to standard cube boxes, directly lowering packaging spend per shipment.
What is the dimensional weight impact for LTL and parcel shipping?
At 4x4x36", each box calculates at 2 lbs dimensional weight on most parcel carriers (using DIM factor 166). Bundles of 25 flat-packed boxes reduce inbound DIM charges significantly versus individual box shipments, improving your total cost of ownership.
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.