41 x 41 x 72 in bulk bag
A 41 x 41 x 72 in bulk bag is the tallest size in our tables: 121,032 cubic inches, 70.0 cubic feet or about 1,983 litres of box, close to two cubic metres. It carries light, bulky product, about 2,380 lb of plastic pellets or 2,520 lb of flour at our assumed densities, and it needs a fill frame and discharger built for a six-foot bag.
- Footprint
- 41 x 41 in
- Body height
- 72 in
- Box volume
- 121,032 cu in = 70 cu ft = 1,983 L
- Method
- 41 x 41 x 72 = 121,032 cu in, divided by 1,728 cu in per cu ft
Fill weight if filled to the box volume
Each row multiplies 70 cu ft by an assumed typical bulk density. A filled bag rounds out and settles, so the real fill differs: use your product's data sheet. Never fill past the SWL on the label.
| Product (assumed density) | Weight at 70 cu ft | Lightest common SWL that covers it |
|---|---|---|
| Plastic resin pellets (34 lb/cu ft) | 2,380 lb | 2,500 lb |
| Wheat flour (36 lb/cu ft) | 2,520 lb | 3,000 lb |
| Seed corn (45 lb/cu ft) | 3,150 lb | 3,300 lb |
| Granulated sugar (50 lb/cu ft) | 3,500 lb | 4,000 lb |
| Granular fertilizer (60 lb/cu ft) | 4,200 lb | 4,400 lb |
| Portland cement (90 lb/cu ft) | 6,300 lb | Over 4,400 lb: fill short of the top |
| Gravel (95 lb/cu ft) | 6,650 lb | Over 4,400 lb: fill short of the top |
| Dry sand (100 lb/cu ft) | 7,000 lb | Over 4,400 lb: fill short of the top |
On the pallet
| Pallet | Room per side, empty footprint |
|---|---|
| 40 x 40 in | Overhangs by 0.5 in a side |
| 48 x 40 in | Overhangs by 0.5 in a side |
| 48 x 48 in | 3.5 in across, 3.5 in along |
Filled bags on a trailer floor
| Fill per bag | Bags, single stacked |
|---|---|
| 1,000 lb | 30 (2 across x 15 rows = 30 by floor; 44 by weight) |
| 2,000 lb | 22 (2 across x 15 rows = 30 by floor; 22 by weight) |
| 3,000 lb | 14 (2 across x 15 rows = 30 by floor; 14 by weight) |
Assumes a 53 ft dry van 630 x 100 in inside and a 44,000 lb payload; your carrier's limits and the bulge of a filled bag decide.
Six feet of bag
41 x 41 x 72 = 121,032 cubic inches; / 1,728 = 70.0 cubic feet; x 28.3 = about 1,983 litres. The body alone is 72 in, six feet. Add the loops and a top spout and the filler's hook bar has to sit well above head height while the bag's bottom rests on the scale. On the discharge side the frame has to lift six feet of full bag clear of the hopper.
Those two checks rule this size in or out before anything else. Measure the frame you have, not the one in the brochure.
Some plants hang tall bags from a lifting frame with four hooks rather than a single bar, so each loop stays vertical, then raise the frame with a hoist or a forklift. The frame and its rigging add height above the bag, so they belong in the clearance sum as well.
Material recovery and plastics reprocessing plants run grinders, wash lines and pelletizers, and each stage can feed a bag: whole flake off the grinder, washed flake off the dryer, pellets off the extruder. Each stage has its own bulk density, so a plant using one tall bag for all three should check the rating against the heaviest.
Light, bulky loads
Product density decides whether 70 cubic feet is useful. At an assumed 34 lb per cubic foot, plastic pellets fill the box at 2,380 lb; at 36 lb, flour reaches 2,520 lb. Pellets need a 2,500 lb rating to fill and flour a 3,000 lb one. Regrind and flake from plastics recycling are often lighter than pellets, which is exactly where a tall bag earns its fabric: the product needs space, not strength.
Seed corn at 45 lb reaches 3,150 lb and sugar at 50 lb 3,500 lb. Fertilizer at 60 lb is 4,200 lb, inside a 4,400 lb bag. Anything denser runs off the table: cement would be 6,300 lb and sand 7,000 lb at box volume. A six-foot bag of sand is never filled to the top.
Bulky fill shows up beyond plastics: expanded perlite, vermiculite, foam and fibre scrap. Their densities can sit well below our lightest figure, and only a weighed sample tells you where. A tall bag earns its place when the weight per cubic foot is low enough that volume, not load, is what runs out.
Light powders filled quickly push air out through the fabric and the top. A vented or uncoated body lets it escape so the bag fills faster, while a coated, unvented bag may balloon and slow the filler. Dust-tight work calls for a filter vent or a dust collector on the filling head instead.
Next to the 45 x 45 x 60
The 45 x 45 x 60 holds 70.3 cubic feet, 0.3 more than this one, at 12 in less height. The two are the same volume in different shapes. This one is narrower: 3.5 in per side on a 48 x 48 in pallet against 1.5 in, and 15 rows in an assumed 53 ft van against 14. The wider bag is shorter under the fill head and steadier.
Pick by what is fixed at your plant. A low frame or a low ceiling points to the 45 in bag. A narrow pallet position, a tight aisle or a discharger with a small frame opening points to this one.
Handling a tall full bag
A 72 in bag on a 41 in base is 1.76 times as tall as wide. Fill it centred, settle it as it fills, and lift it with the forklift tines through all four loops, or with all loops on one crane hook or bar. Do not drag it, and keep people out from under it while it hangs.
The van floor takes 30 of these, two across and 15 rows. At 2,380 lb of pellets, 44,000 / 2,380 = 18 bags make the payload. They will not double stack in a van either: two 72 in bags stand 144 in.
Light, fluffy material can rathole in a tall bag, draining a channel above the spout and leaving product clinging to the walls. Flow aids on the discharger, or a full-open bottom where the line can take it, clear the bag.
Tall, light bags ship a lot of air in freight terms: 18 bags of pellets reach the payload while 12 floor spots stay empty. A fuller truck needs a heavier product or a mixed load, so plan bag counts per trailer before setting a fill target, not after.
- Duffle top or a wide spout top for light flake and regrind
- Spout bottom sized for the product's flow
- 2,500 lb SWL for pellets, 3,000 lb for flour, 5:1 single trip
- Vented fabric where trapped air slows a fast fill of light powder
Questions
What is a 41 x 41 x 72 bulk bag for?
Light, bulky product: plastic pellets, flake, regrind, flour. The 70.0 cubic foot box holds about 2,380 lb of pellets at an assumed 34 lb per cubic foot.
How does it compare with a 45 x 45 x 60 bag?
Same volume, 70.0 against 70.3 cubic feet. This one is 12 in taller and 4 in narrower, so it fits a 48 x 48 pallet with more room and one more row in a 53 ft van.
Will my fill frame take a 72 in bag?
Measure from the scale deck to the hook bar and subtract the 72 in body, the loops and the top spout. If the result is negative, the bag will not hang.
Request 41 x 41 x 72 in bags
Add the top, the bottom, the SWL and the count. We confirm the spec and plan the load to your dock.