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Frequently asked questions about boxes from Plus Packaging, the leading supplier of corrugated boxes, tuck flap boxes, and other shipping supplies

FAQ - boxes

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How do you measure corrugated cartons?

Corrugated Boxes

Length (L) x Width (W) x Height (H)

(interior dimensions)


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How to measure tuck-flap boxes

Tuck-Flap Boxes

Length (L) x Width (W) x Height (H)

(interior dimensions)


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What are the UPS guidelines for carton strength?

UPS Strength Guidelines

Box Type

Max Weight in Box

200 # Single Wall

40 lbs

275 # Single Wall

65 lbs

350 # Single Wall

80 lbs

200 # Double Wall

60 lbs

275 # Double Wall

80 lbs

350 # Double Wall

100 lbs

400 # Doulble Wall

120 lbs

500 # Double Wall

140 lbs

600 # Double Wall

150 lbs


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