1. 32 ECT Boxes

  • 32 ECT (The Edge Crush Test) measures the stacking strength of corrugated boxes. In other words, it tests the amount of pressure a box can withstand before being crushed.

2. 200 LB Boxes

  • 200 LB. test (Mullen Test / Bursting Test) measures the bursting strength of corrugated boxes. In other words, it tests the amount of force that is required to puncture the wall of the box.
8NET Box Cerfificate
32 ECT 200 LB

3. What is the difference between 200 LB. test boxes and 32 ECT Boxes?

  • 200 LB. Test boxes can handle more severe weight and provide better protection than 32 ECT boxes.
  • The proper ECT rated corrugated provides an equivalent level of strength but uses less corrugated material.
Corrugated Board Strength Equivalencies:
Bursting Test Minimum Edge Crush Test Maximum Load Per Caton
Standard 200 LB 32 ECT 40 lbs.
Heavy Duty 275 LB 44 ECT 65 lbs.
Heavy Duty-Double Wall 275 LB 48 ECT 80 lbs.

4. RSC Boxes

RSC Illustration
  • RSC (Regular Slotted Container) is the most common box style. All flaps have the same length, and the two outer flaps are one-half the container’s width, so that they meet at the center of the box when folded.
  • Ideal for: shipping small individual items such as cups and mugs, books.

5. What is S/W and D/W?

  • Single Wall Board: The most common style corrugate cardboard is manufactured.
  • Double Wall Board: Also known as “heavy duty” corrugation which is commonly used for larger industrial containers or heavier objects. Much more resistant to breaking when stacked.