Uline LogoBox Guide

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Use this guide to determine which box is right for you.


Cheaper boxes may not survive the hazards of shipping and handling. Uline refuses to sacrifice the quality of our boxes. Uline's 200 lb. test boxes help protect your products. Uline Boxes
200 lb. Test
Uline 200 lb. test boxes ensure greater bursting strength than 32 ECT boxes. Greater bursting strength means fewer crushed and damaged boxes during shipping.
Box Types
32 ETC TEST BOXES 200 LB. TEST 275 LB. TEST BOXES
MULTI-DEPTH BOXES 275 LB. TEST DOUBLE WALL BOXES TELESCOPIC BOXES LONG BOXES TALL BOXES
32 ECT 200 lb. Test 275 lb. Test Multi-Depth 275 lb. Test Double Wall Telescopic Long Tall
For lightweight shipments. For everyday shipping purposes. 38% stronger than 200 lb. test boxes. Cut down to the size you need. When extra stacking strength is necessary. Adjustable 2-piece design. Long flaps make it easy to load. Short flaps make it easy to close.
Which Box Should I Use?
Box Certificate
  • 32 ECT
  • 200 LB.
  • 275 LB.
  • 275 LB.
  • 350 LB.
UPS MAXIMUM WEIGHT
0 LBS. 20 LBS. 40 LBS. 60 LBS. 80 LBS. 100 LBS.
UPS Maximum Weight Guidelines
Measure A Box
  1. Listed dimensions are always inside dimensions.
  2. The first dimension is length. Length is always the longest side of the box that has a flap.
  3. The next dimension is width. The width side also has a flap, but is always the side shorter than the length.
  4. Height is the only dimension without a flap. The height measurement does not include flaps.
NOTE: Acceptable manufacturing variance is +/- 1/8".
Cubic Inches:
L" x W" x H"

Cubic Feet (from inches):
(L" x W" x H")/1,728

Standard Box Long Box Tall Box
Standard Box
MODEL
NO.		 L x W x H
S-4235 16 x 12 x 8"
Long Box
MODEL
NO.		 L x W x H
S-4116 12 x 4 x 4"
Tall Box
MODEL
NO.		 L x W x H
S-4481 4 x 4 x 12"
What is the difference between 200 lb. test boxes and 32 ECT boxes?
UPS Strength Guidelines

Uline and UPS recommend 200 lb. test boxes, which provide more strength and protection than 32 ECT boxes – a lightweight alternative.

  • 200 lb. test refers to bursting strength, while 32 ECT refers to stacking strength. Boxes that meet 200 lb. test will also exceed 32 ECT stacking strength.
  • 200 lb. test boxes require a heavier paper grade and have a bursting strength of up to 60% greater than 32 ECT boxes.

    • 200 lb. test boxes perform more consistently.

Look at the box certificate stamp to identify your box

UPS Strength GuidelinesUPS Strength Guidelines
Helpful Hints

To ship via UPS or FedEX, surround each item by 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.
Cushioning/Void Fill
  • Bubble
  • Foam
  • Paper (Kraft/Newsprint)
  • Peanuts
  • Instapak Quick
  • Vermiculite
  • Corrugated Wrap
  • Cellulose Wadding
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