18 x 18 x 4 Lightweight 32 ECT Corrugated Boxes

- Ship toys, clothing, towels, and other durable items with our lightweight 32 ECT boxes
- 32 ECT boxes are 19% lighter than 200 lb. test boxes
- Bundle and bale quantity: 25 / 300 lbs. per bundle
- Dimensions: 18 3/8 x 18 3/8 x 4 5/8 (+/- 1/8)
- All FedEx and UPS dimensional weight: 12 lbs
- Made of lightweight C flute material, except for B flute options
- All boxes open along the length (first dimension) and have glued seams
- Meets ASTM D5118 standards
- 200# Test boxes are 60% stronger with a bursting strength of 200 lbs/sq.in.
- Recommended by UPS for shipping up to 40 lbs
- 32 ECT boxes are recommended by UPS for shipping up to 30 lbs
- Pound test refers to bursting strength, while ECT refers to stacking strength
- Box strength guidelines (maximum weight per box) according to Fiber Box Handbook and UPS guidelines:
- 32 ECT Single Wall: 65 lbs (Fiber Box Handbook) / 30 lbs (UPS)
- 200# Single Wall: 65 lbs (Fiber Box Handbook) / 40 lbs (UPS)
- 275# Single Wall: 95 lbs (Fiber Box Handbook) / 65 lbs (UPS)
- 350# Single Wall: 120 lbs (Fiber Box Handbook) / 80 lbs (UPS)
- 200# Double Wall: 80 lbs (Fiber Box Handbook) / 60 lbs (UPS)
- 275# Double Wall: 100 lbs (Fiber Box Handbook) / 80 lbs (UPS)
- 350# Double Wall: 120 lbs (Fiber Box Handbook) / 100 lbs (UPS)
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