International Plastics, Inc.


Corrugated Boxes

Wholesale Shipping Boxes & Containers...
We have the right box for you!

Standard Boxes

  • 200 lb. Test Boxes
  • White & Kraft Corrugated, Multi-Depth
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Heavy Duty Boxes

  • 275 lb. Test Boxes
  • Single Wall, Double Wall, Multi-Depth, Stitch Joint
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Moving Boxes

  • 275 -350 lb. Test Boxes
  • Combo Packs, Mirror, Dish Packing, Wardrobe
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Corrugated Bins

  • Home and Office Storage Bins & Boxes
  • Open Top Bins, FIle Storage, Stackable Bins
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Bulk Cargo Containers

  • Corrugated Cargo Containers, Gaylord Boxes
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HazMat Boxes

  • Boxes & Foam Shippers
  • Hazardous Waste Boxes
  • Paint Can Foam Shippers
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Which box is right for me to use for packaging? This box guide will help provide the answer.

200 lb. Test or 32 ECT Boxes? What’s the difference?


  • Eliminate costly returns due to shipping damage. Choosing an incompatible cardboard box for a desired shipping or packaging need may not help it or it’s contents survive the perils of everyday handling.
  • International Plastics and UPS recommend 200 lb. test boxes. They provide more strength and protection than 32 ECT boxes which are a budget-friendly alternative for lightweight shipments
  • International Plastics 200 lb. test boxes are made with heavier paper and have 60% greater bursting strength than 32 ECT boxes.
  • Providing substantial bursting strength means negligible crushed or damaged boxes and content during shipping.
  • International Plastics 100% satisfaction guarantee assures that we stand behind any of our products and that we refuse to sacrifice the quality of our boxes.

How to Measure a Box

  • Listed dimensions are always inside dimensions.
  • Length is always the longest side of the box that has a flap.
  • Width is the shorter side of the box that also has a flap.
  • Depth measurements do no have a flap.
  • NOTE: Acceptable manufacturing variance is approx. +/- 1/8”


Helpful Hints

  • The first dimension is Length.
  • The second dimension is Width
  • Depth is the 3rd dimension and the only side without a flap..
  • To ship via UPS or FedEx , surround each item with 2” of packing material and place each item 2” away from the walls of the box.
  • To ship via USPS, surround each item with packing materials until items are no longer moving around in the box.
  • Air Pillows, Bubble Bags, Bubble Wrap, Convoluted Foam, Foam Rolls, Kraft Paper Rolls & Sheets, Newspint Sheets, VCI Rolls & Sheets


See Other Related Mailing and Shipping Supplies

Poly Mailers - Packing List Envelopes - Packing Tape

Corrugated Cardboard Boxes for Packaging and Shipping

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