Warehouse managers and fulfillment directors shipping tall, irregularly shaped items need reliable containment without custom solutions. The 12x12x48" telescoping inner box delivers ECT-32 strength in a two-piece adjustable design that accommodates variable heights while maintaining structural integrity and reducing SKU complexity.
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How to Choose the Right Packaging
Specs at a Glance
| Material | ECT-32 Single Wall Kraft Corrugated |
| Dimensions | 12" W √ó 12" D √ó 48" H |
| Box Type | Telescoping Inner (Two-Piece Adjustable) |
| Bottom Construction | Full Overlap (FOL) for Enhanced Stacking Strength |
| Recyclable | Yes |
Common Use Cases
- Shipping tall cylindrical items (tubes, poles, sporting goods) Packaging irregular/elongated products with adjustable internal height E-commerce fulfillment for apparel, textiles, and rolled goods Industrial component distribution requiring crush-resistant containment Multi-SKU operations reducing box inventory complexity
What You'll Receive
- Bundle of 15 telescoping inner cartons (12x12x48") Requires T121248OUTER boxes to complete two-piece set (sold separately)
Shipping & Packaging
Frequently Bought Together
Bundle & Save 5%Frequently Asked Questions
Yes. This SKU includes only the inner telescoping cartons. You must pair them with T121248OUTER boxes to create complete two-piece sets. Purchasing both allows you to adjust height based on product length, eliminating single-use custom boxes.
ECT-32 provides 32 lbs edge crush test strength per inch of board height, suitable for stacking up to 5-6 boxes high in standard warehouse conditions. This rating balances durability with cost efficiency for mid-weight products; verify your specific load requirements with your packaging specialist.
The FOL bottom interlocks all four flaps across the base, distributing weight more evenly and preventing bottom bulge or separation during stacking and transport. This extends box life through multiple uses and reduces damage claims on tall shipments.
The compact 12x12" base allows 25-30 boxes per layer on a standard 48x40" pallet, compared to 12-16 for larger formats. Combined with 48" height, you ship more units per pallet while maintaining lower dimensional weight charges, directly reducing your freight cost per unit.
Technical Specifications
| Material | ECT-32 Single Wall Kraft Corrugated |
| Dimensions | 12" W √ó 12" D √ó 48" H |
| Box Type | Telescoping Inner (Two-Piece Adjustable) |
| Bottom Construction | Full Overlap (FOL) for Enhanced Stacking Strength |
| Recyclable | Yes |
| Color | Kraft |
| Strength / Material | ECT-32 Single Wall Corrugated |
| Dimensions (Internal) | 12"" × 12"" × 48"" (L × W × H) |
Product Downloads
Shipping Information
Outer Carton Dimensions
60.25" × 24.25" × 5.25" (L × W × D)
Unit of Measure
BUNDLE
Qty Per Shipping Unit
15 PER BUNDLE
LTL Freight Class
Class 125
Carrier Eligibility
UPS Ground & Freight Eligible
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