![18" x 12" x 12" 275 lb. Heavy Duty Corrugated Box | San Antonio, Austin, College Station Texas | EcoBox 18" x 12" x 12" 275 lb. Heavy Duty Corrugated Box | San Antonio, Austin, College Station Texas | EcoBox](http://ecobox.com/site/files/boxstrength.jpg)
18" x 12" x 12" 275 lb. Heavy Duty Corrugated Box | San Antonio, Austin, College Station Texas | EcoBox
![ECT vs Mullen Test for box strength | single, double, & triple wall | B2B Edge Crush Testing | Nelson Container Corporation Germantown, Wisconsin ECT vs Mullen Test for box strength | single, double, & triple wall | B2B Edge Crush Testing | Nelson Container Corporation Germantown, Wisconsin](https://www.nelsoncontainer.com/Content/files/ECTvsMullenTestEx.png)
ECT vs Mullen Test for box strength | single, double, & triple wall | B2B Edge Crush Testing | Nelson Container Corporation Germantown, Wisconsin
![Performance Under Pressure: Edge Crush Test For Corrugated Cartons (+ FREE Conversion Chart) | CS Packaging, Inc. Performance Under Pressure: Edge Crush Test For Corrugated Cartons (+ FREE Conversion Chart) | CS Packaging, Inc.](https://cspackaging.com/wp-content/uploads/2019/03/ECT-Conversion-Chart.png)
Performance Under Pressure: Edge Crush Test For Corrugated Cartons (+ FREE Conversion Chart) | CS Packaging, Inc.
![ECT vs Mullen Test for box strength | single, double, & triple wall | B2B Edge Crush Testing | Nelson Container Corporation Germantown, Wisconsin ECT vs Mullen Test for box strength | single, double, & triple wall | B2B Edge Crush Testing | Nelson Container Corporation Germantown, Wisconsin](https://www.nelsoncontainer.com/Content/files/Icons/MullenTest.png)