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275 lb. Test Heavy Duty Boxes

Heavy Duty Corrugated Shipping Boxes

  • Our Heavy Duty Corrugated Cardboard Boxes for Shipping provide added protection while sending or storing your goods. Use heavy-duty boxes for additional stacking strength.
  • Single Wall Heavy Duty Boxes are made from single wide 275# ECT-44 corrugated carton.
  • Multi-Depth Heavy Duty Boxes have score lines at multiple depths designed to "fold to size" for a precise fit.
  • Double Wall Heavy Duty Boxes are made from 275# ECT-48 corrugated carton.
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