4x4x48 ECT-32 Kraft Telescoping Inner Box - Adjustable Design, 25-Pack
$54.09
/ bundle of 25$2.16 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" × 48"
Board / material
ECT-32 Single Wall Corrugated
Color
Kraft
Freight class
Class 125
Specifications
| Inside dimensions | 4" × 4" × 48" (L × W × H) |
|---|---|
| Board / material | ECT-32 Single Wall Corrugated |
| Color | Kraft |
| Sold as | Bundle of 25 |
| Order in multiples of | 25 |
| Bundle weight | 16.5 lb |
| Outer carton (shipping) | 52.25 × 10.0 × 8.25 in |
| LTL freight class | Class 125 |
| GTIN | 841436049559 |
| SKU | T4448INNER |
About this item
SKU T4448INNER — 4" × 4" × 48", ECT-32 Single Wall Corrugated, Kraft. Sold as a bundle of 25, shipped from US warehouses.
The 4x4x48 ECT-32 Kraft Telescoping Inner Box - Adjustable Design, 25-Pack is the inner half of a two-piece adjustable corrugated carton for long items such as rods, trim, tubes, banners, rolled materials, and linear parts. Listed specs include inside dimensions 4" x 4" x 48"; kraft material; ECT-32; bundle of 25. Pair the inner box with its matching outer carton when a variable-length shipper is needed.
Common questions
How does the two-piece telescoping design work?
The inner box (T4448INNER) slides into the outer box (T4448OUTER) to create an adjustable fit. This allows you to customize box height to match product length, reducing void fill waste and dimensional weight charges while maintaining consistent bottom footprint dimensions across shipments.
What's the ECT-32 rating and why does it matter?
ECT-32 indicates edge crush test strength of 32 pounds per linear inch, ideal for single-wall corrugated with moderate stacking loads. The full overlap bottom reinforces corner strength, making this box suitable for stacking 3-5 units high in warehouse environments without crush risk.
Can I use the inner box alone, or do I need both pieces?
Both the inner (T4448INNER) and outer (T4448OUTER) boxes are required to create the complete telescoping carton. They are sold separately, so you'll need to order both SKUs to assemble your full packaging solution.
What products work best in 4x4x48" boxes?
This size excels for tall, narrow items: tubing (PVC, metal, cardboard), handles, rods, poles, rolled textiles, sports equipment, and specialty components. The adjustable height accommodation means you can use one box size for products ranging from 24" to 48" in length, reducing inventory complexity.
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.