RSC - Regular Slotted Containers
The most widely used corrugated box in the world. All four flaps are equal in length and meet at the center when closed - simple, economical, and endlessly customizable in size.
When to Use It
Common industries and use cases where this box type performs best.
E-Commerce Shipping
Right-sized RSCs reduce DIM weight charges and protect products in transit.
Industrial Parts
Heavy-duty RSCs handle metal parts, fasteners, and raw materials with ease.
Food & Beverage
Moisture-resistant grades available for produce, frozen goods, and bottled products.
Retail & Distribution
Palletizable stacking strength keeps product secure from warehouse to shelf.
Board Grades
ECT (Edge Crush Test) measures stacking strength. Mullen measures burst resistance. Use ECT for palletized loads; Mullen for rough handling.
| Grade | Mullen Burst | Description | Best For | |
|---|---|---|---|---|
| 32 ECT | 200 lbs | Light-duty. Single wall. | Light goods under 20 lbs | |
| 44 ECT | 200 lbs | Standard single wall. Most common. | General shipping up to 65 lbs | Most Common |
| 51 ECT | 275 lbs | Heavy single wall. | Dense or abrasive items | |
| 61 ECT (DW) | 350 lbs | Double wall. High stacking strength. | Heavy industrial, palletized loads | Heavy Duty |
Flute Options
Flute profile determines thickness, stacking strength, and print quality. We stock all common flutes and produce custom combinations in-house.
B-Flute
Thinner profile with excellent printing surface. Good crush resistance for small boxes.
C-Flute
The most common RSC flute. Balanced stacking strength and cushioning for general shipping.
BC Double Wall
Combines B and C flutes for double wall construction. Superior rigidity and puncture resistance.
Max Sizes We Produce
All sizes produced in-house on our own equipment - no outsourcing, no lead-time surprises.
CNC vs. Steel Rule Dies
For short runs and custom sizes, the difference is significant. Here's why our CNC-first approach wins.
✓ CNC Cutting (APG)
- No tooling fee - no steel die to order or pay for
- Change dimensions instantly - update the cut file, rerun
- Short runs of 25–500 units are economical with no setup cost
- Prototypes same-day - see the box before committing to production
- Multiple sizes from one sheet - nest different SKUs on one run
✗ Steel Rule Dies
- Steel rule dies cost $150–$600 per unique size
- Die lead time adds 5–10 business days before first box is cut
- Changing dimensions means buying an entirely new die
- Minimum runs of 500–1,000 needed to amortize die cost
- Die wears over time - tolerances drift after high-volume runs
Ready to Order?
From prototype to production - built in-house in Wylie, TX.