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Reference · The full IBC size guide

Everything you need
to spec, ship, or
stack an IBC tote.

The reference page we wish existed when we started this business. Capacities, footprints, weights, fitment specs, stack limits, freight planning numbers — all in one place.

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The quick comparison

275 vs. 330 gallon, side by side.

Spec275 gallon330 gallon
Capacity (US gal)275330
Capacity (liters)1,0411,249
Footprint (in)40 × 4840 × 48
Height (in)4653
Empty weight (lb)~125~145
Filled weight (water, lb)~2,415~2,895
Outlet2" ball valve · cam-lock2" ball valve · cam-lock
Top opening6" vented cap6" vented cap
UN ratingUN/31HA1/YUN/31HA1/Y
PalletComposite / steel / woodComposite / steel / wood
Stacking & storage

How high can you stack?

  • Empty totes can be stacked four-high indoors, three-high outdoors.
  • Filled with water (~8.34 lb/gal): stack two-high max, indoors only, on level concrete.
  • Filled with denser product (e.g., syrup at 11–12 lb/gal): single-tote only, never stacked filled.
  • Cage-to-cage contact is the load path. Never stack with the upper tote's pallet contacting the lower tote's bottle directly.
Outdoor storage

How long can you store outdoors?

  • Uncovered HDPE begins UV-degrading within 12 months in Midwestern sun. Use a UV cover or paint.
  • Painted shell (water-based exterior latex) extends UV life by 3–5×.
  • Algae growth can occur in translucent totes filled with water-bound contents. Cover or use an opaque shell.
  • Freeze risk: empty totes are fine; filled totes need insulation jackets below 28°F sustained.
Freight planning

How many totes fit on a truck.

Trailer typeSingle-stack emptyDouble-stack emptyFilled (water)
53' dry van265226
48' flatbed2448 (with edge)24
40' container204020
20' container102010

Filled-load weight, not pallet count, is usually the binding constraint. 26 water-filled 330-gal totes is ~75,300 lb of tare + product — over US road weight limits. Plan filled hauls in halves.

Fitments cheat sheet

Common adapter combinations.

For garden hose builds

2" coarse outlet → 3/4" GHT adapter (polypro). The most-asked-for accessory we sell. Two-step adapter is more robust than a single-piece — easier to seal, easier to replace.

For NPT plumbing

2" coarse outlet → 2" NPT (brass or polypro). Brass for hot or solvent. Polypro for cold water and most chemicals.

For drum-pump transfer

6" cap → drum-pump dip tube, with chemical-compatible wetted parts matching the prior contents.

For aquaponics cascade

2" outlet → 1" bulkhead reducer → silicone hose. Reduces flow to a manageable cascade rate without flooding the lower tier.

Articles & deeper reads

Going further on sizing & specs.

Article

What "food-grade" actually means on a used IBC.

Wash records, prior contents, and the regulatory edges.

Article

Sizing a rainwater catchment with IBC totes.

Roof area math, first-flush calculation, multi-tote cascade configurations.

Article

The realistic lifetime of an IBC tote.

Why a well-cared-for tote will outlast its second owner.

All articles →

Weights by commodity

What your tote actually weighs when it's full.

Density matters more than gallons when you're stacking or loading freight. Numbers below are filled weight, including a ~145 lb empty 330-gallon composite tote with pallet.

CommodityDensity (lb/gal)275-gal filled (lb)330-gal filled (lb)
Water (potable)8.34~2,415~2,895
Diesel #27.10~2,080~2,488
Gasoline (note: not approved use)6.20~1,830~2,191
Used motor oil7.40~2,160~2,587
Vegetable oil7.70~2,243~2,686
Maple syrup / sugar syrup11.20~3,205~3,841
Molasses11.80~3,370~4,039
Liquid fertilizer (28% UAN)10.65~3,054~3,660
Liquid fertilizer (32% UAN)11.06~3,167~3,795
Calcium chloride brine (32%)10.80~3,095~3,709
Sulfuric acid (93%, not approved use)15.30~4,333~5,194
Honey11.85~3,384~4,055
Beer wort8.80~2,545~3,049
Wine / cider8.20~2,380~2,851

A composite IBC is rated UN/31HA1/Y, which means a packing group II/III specific gravity up to 1.9. Above that, do not fill — period. Sulfuric acid is on this table as a density reference, not as an approved use of a reused tote.

Stack-limit safety math

Why you can stack four empties but not two filled.

The IBC cage is rated to bear a static stacking load of roughly 4× its filled weight. That sounds generous — until you account for dynamic load (wind, forklift bumps, thermal cycling) and for the fact that the rated load assumes a perfectly square, cage-to-cage contact.

Our internal stacking rules, in plain English:

  • Empties indoors: 4-high. The cages nest cleanly and the building blocks wind.
  • Empties outdoors: 3-high. Wind load matters. Strap if forecast is over 25 mph.
  • Water-filled: 2-high, indoors only, on level concrete, never against a wall. Inspect monthly.
  • Anything denser than water: 1-high, no exceptions. The cage rating burns through quickly above 9 lb/gal.
  • Frozen contents: 1-high, and only if the cage hasn't been deformed by the freeze. Inspect.

Yes, you will see stacks higher than this in the wild. They are usually fine. Then occasionally they are not, and the result is forty gallons per second of liquid fertilizer hitting concrete. Don't be that operator.

Container & trailer cube planning

How to actually plan a load.

Volume vs. weight: which binds first?

For empty totes, volume binds first — you fill the floor before you hit weight limits. For filled, weight binds first, almost always. The crossover happens around 11–12 totes of dense product on a single-axle hauler.

Container loading sequence

For a 53' van: 26 totes single-stack across 13 rows of 2, with a 6" gap row-to-row for strap access. Block-and-brace the back row. For double-stack: cage-on-cage only, never pallet-on-bottle.

Lift-gate trailers

Lift-gate capacity is usually 2,500–3,000 lb. A water-filled 330 is right at that limit. A dense-filled 330 exceeds it. Plan for forklift offload if your product is over 9 lb/gal.

Driver hours & backhaul

Our owner-operators run on real DOT hours. A 600-mile single is usually a day-and-back; over that we route as a multi-stop. Backhaul utilization can drop your freight share materially — ask if your destination is on one of our return routes.

Valve & cap compatibility

What threads what.

Tote fitmentCommon specAdapts toNotes
Outlet (most composite IBCs)2" coarse buttress thread (S60x6)3/4" GHT, 2" NPT, 2" cam-lockUse a two-step adapter for hose builds
Outlet (older European spec)S100x8 (DIN 61)Requires S100-to-S60 reducer firstRare on US-sourced totes
Top fill cap (standard)6" (150mm) coarse, ventedDrum-pump dip tubes, vent kitsReplace gasket on every food-grade refill
Top fill cap (large)9" (225mm)Wide-mouth fill, manway accessLess common; specific brands only
Cam-lock fittings2" Type C (female) / Type E (male)Most pump and hose systemsVerify gasket material against contents
NPT plumbing2" NPT female on adapterMost US plumbing schedulesUse PTFE tape, not pipe dope, on food-grade
Ball valve replacement2" ball valve, EPDM or Viton seatField-replaceable in 4 minutesMatch seat material to chemical compatibility
Pallet types & service life

The thing the tote sits on actually matters.

Composite (plastic)

10–15 year service life

HDPE or PP construction, integrally molded feet, four-way forklift entry. Lightest of the three; least likely to fail under repeated load cycles. Our preferred default for food-grade.

Steel

15–25 year service life

Welded tubular or stamped steel base. Heaviest, longest-lived, best for chemical/industrial work where pallet damage is common. Susceptible to corrosion outdoors.

Wood

3–7 year service life

Lowest cost, heat-treated for international shipping. Splinters, absorbs spills, harder to clean. We do not use wood pallets under food-grade reconditioned units.

Conversions cheat sheet

Gallons, liters, barrels, and other awkward units.

FromToMultiply by
US gallonsLiters3.785
US gallonsImperial gallons0.833
US gallonsCubic feet0.1337
US gallonsBarrels (oil, 42-gal)0.0238
LitersUS gallons0.264
Cubic metersUS gallons264.2
275-gal toteLiters1,041
275-gal toteCubic feet36.8
275-gal toteOil barrels6.55
330-gal toteLiters1,249
330-gal toteCubic feet44.1
330-gal toteOil barrels7.86
Freeze risk by ambient temperature

When to insulate, when to drain.

Ambient (sustained 24-hour)Water-filled toteDieselGlycol mix (50/50)
Above 32°FSafeSafeSafe
28°F to 32°FSurface ice possible; safeCloud point near for #2Safe
20°F to 28°FInsulate, no drain needed yetSwitch to winter blendSafe
10°F to 20°FInsulate or drainGel risk on #2Safe
0°F to 10°FDrain unless heat-tracedDrain or gel-additiveSurface ice possible
Below 0°FDrain. Period.Drain or insulate & traceInsulate

A frozen tote expands the HDPE shell beyond its memory and cracks the cage welds. The damage is permanent and not field-repairable. If in doubt, drain.

Fitting size cross-reference

What goes with what.

ApplicationTote sideSystem sideAdapter required
Garden hose2" S60x63/4" GHT2-step polypro
Drip irrigation header2" S60x61" or 1.25" poly tubingS60 to 1" barbed
Bulk transfer pump2" S60x62" cam-lockS60 to cam-C
Drum pump6" top cap1" suction tubeCap-mount adapter
Bottom unload trailer2" ball valve2" NPTDirect thread
Aquaponics cascade2" S60x61" PVC bulkheadS60 to 1" bulkhead reducer
Rainwater first-flush6" top cap4" downspout4" to 6" cap insert
Vented fuel transfer2" S60x63/4" or 1" fuel hoseS60 to NPT to barb
Quick reference card

The numbers we recite the most.

40 × 48
Footprint, inches
8.34
Water density, lb/gal
2,895
330-gal water-filled, lb
26
Empty totes on a 53' van, single-stack
Frequently asked

Size, spec, and freight questions.

What's the actual difference between a 275 and a 330?
Same footprint (40 × 48), same fitments, same UN rating. The 330 is taller (53" vs 46") and holds an extra 55 gallons. Pick by available headroom and the weight rating of whatever it's sitting on.
Can I stack two filled totes if I'm really careful?
Water-filled, indoors, on level concrete, with monthly inspection: yes. Anything denser than water: no, regardless of how careful you are. The cage burns through its rated load too fast.
Will a tote freeze and crack in Missouri winter?
Yes, if you leave it full and uninsulated below ~20°F sustained. See the freeze-risk table above. The cheapest answer is: drain it for the winter or move it indoors.
What's the lifespan of a reconditioned tote?
If kept indoors or UV-covered and used for compatible chemistry, 10–15 years of second life is realistic. Outdoor uncovered HDPE starts UV-degrading inside a year — paint or cover it.
Can I get a tote with a different valve?
Yes. We can swap to cam-lock, NPT, or different ball-valve seat material before shipping. Tell us the application; we'll spec the right seat (EPDM, Viton, polypro).
How many totes fit in a 20' shipping container?
10 single-stack empty, 20 double-stack empty, 10 filled (weight-limited). Same as in the freight table above.
What's the maximum specific gravity I can fill?
UN/31HA1/Y rating is good to specific gravity 1.9. Above that, do not fill a composite IBC. For reference: water is 1.0, 32% UAN is ~1.32, sulfuric acid 93% is ~1.83, concentrated brine is around 1.3.
Are reconditioned totes UN-rated?
The original UN rating only applies to a new tote in its original certified condition. A reconditioned tote is not UN-certified for regulated hazmat unless it's been through a UN-rated reconditioning program. For non-regulated chemistry (water, food, ag fertilizer, glycol), the rating is informational. Tell us if your application is regulated.
Can I get a custom-cut tote?
Yes. Cut-tops for rainwater, side ports, raised-bed cages, cascade configurations. Started as one-off requests, now a real product line.
Still spec'ing

Send us the application; we'll spec it.

Tell us the contents, the environment (indoor/outdoor, temperature range), and how you'll move the liquid in and out. We'll quote the right tote, the right fitment, and the right pallet.

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