18 x 18 x 12" 275 lb Heavy Duty Corrugated Boxes

HEAVY DUTY

Greater bursting strength than 200 lb. test boxes. Guarantee shipments arrive intact.
  • UPS recommended weight capacity up to 65 lbs.

    Single Wall Box: 3/16 in. Thick
275 LB. TEST
SOLD IN BUNDLE QUANTITIES
MODEL
NO.
INSIDE DIMENSIONS
L x W x H
PRICE PER BOX BUNDLE/
BALE QTY.
WT./
BNDL.
IN STOCK
SHIPS TODAY
25 100 250 500 1,000+
S-4771 181812" $4.29 $3.93 $3.75 $3.56 $3.40 25 / 125 63 lbs.  ADD
DIMENSIONS:
  • Outside: 18 1/2 x 18 1/2 x 12 3/4" (+/- 1/8")
  • All FedEx and all UPS Dimensional Weight: 34 lbs
MATERIAL: 
  • C flute
FEATURES:
  • All boxes open along the length (first dimension).
  • Seams are glued.
SPECIFICATIONS:
  • Meets ASTM D5118
TERMINOLOGY:
  • Pound Test Refers to Bursting Strength:
    • 275# test boxes withstand 275 lbs/sq.in. of side wall pressure before bursting.
BOX STRENGTH GUIDELINES: (Maximum weight per box)                  
FIBER BOX HANDBOOK UPS GUIDELINES
32 ECT Single Wall65 lbs30 lbs
200# Single Wall65 lbs40 lbs
275# Single Wall95 lbs65 lbs
350# Single Wall120 lbs80 lbs
200# Double Wall80 lbs60 lbs
275# Double Wall100 lbs80 lbs
350# Double Wall120 lbs100 lbs
500# Double Wall160 lbs140 lbs
SPECIFICATIONSMETRICIMPERIAL
INSIDE LENGTH x WIDTH x HEIGHT46 x 46 x 30 cm18 x 18 x 12"
WEIGHT/BNDL.29 kg63 lbs.
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05/13/2025 07:52:58 AM; USWEB8