35 x 35 x 45 in bulk bag
A 35 x 35 x 45 in bulk bag holds 31.9 cubic feet of box volume, which puts granular fertilizer at about 1,914 lb and seed corn at about 1,436 lb, so it is a usual size for farm inputs sewn at 1,500 to 2,000 lb SWL. With heavy product such as cement or sand it is filled to the rating, not to the top.
- Footprint
- 35 x 35 in
- Body height
- 45 in
- Box volume
- 55,125 cu in = 31.9 cu ft = 903 L
- Method
- 35 x 35 x 45 = 55,125 cu in, divided by 1,728 cu in per cu ft
Fill weight if filled to the box volume
Each row multiplies 31.9 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 31.9 cu ft | Lightest common SWL that covers it |
|---|---|---|
| Plastic resin pellets (34 lb/cu ft) | 1,085 lb | 1,500 lb |
| Wheat flour (36 lb/cu ft) | 1,148 lb | 1,500 lb |
| Seed corn (45 lb/cu ft) | 1,436 lb | 1,500 lb |
| Granulated sugar (50 lb/cu ft) | 1,595 lb | 2,000 lb |
| Granular fertilizer (60 lb/cu ft) | 1,914 lb | 2,000 lb |
| Portland cement (90 lb/cu ft) | 2,871 lb | 3,000 lb |
| Gravel (95 lb/cu ft) | 3,031 lb | 3,300 lb |
| Dry sand (100 lb/cu ft) | 3,190 lb | 3,300 lb |
On the pallet
| Pallet | Room per side, empty footprint |
|---|---|
| 40 x 40 in | 2.5 in across, 2.5 in along |
| 48 x 40 in | 2.5 in across, 6.5 in along |
| 48 x 48 in | 6.5 in across, 6.5 in along |
Filled bags on a trailer floor
| Fill per bag | Bags, single stacked |
|---|---|
| 1,000 lb | 36 (2 across x 18 rows = 36 by floor; 44 by weight) |
| 2,000 lb | 22 (2 across x 18 rows = 36 by floor; 22 by weight) |
| 3,000 lb | 14 (2 across x 18 rows = 36 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.
Ten inches taller than the cube
On a 35 x 35 in footprint every inch of height adds 1,225 cubic inches, a little over 0.7 cubic feet. Ten inches above the 35 in cube therefore adds 12,250 cubic inches. The whole bag works out as 35 x 35 x 45 = 55,125 cubic inches, which divided by 1,728 is 31.9 cubic feet, or about 903 litres. That is enough to carry a moderate-density product past three quarters of a ton without making the bag tall.
The extra height is what lets a granular product reach a useful weight. At an assumed 60 lb per cubic foot, granular fertilizer fills the box at 1,914 lb, just under a 2,000 lb rating. Seed corn at 45 lb comes to 1,436 lb, inside a 1,500 lb bag. Granulated sugar at 50 lb is 1,595 lb. Those are box figures; a real bag that rounds at the sides carries a little less, and a test fill on your own scale shows where it lands.
Check how the purchase note is written, too. A line that says 35 x 35 x 45 without an SWL leaves the most important number blank, and two bags sharing dimensions can differ by a thousand pounds of rating. We ask for the rating, the safety factor and the static type every time.
Fertilizer and seed
Blenders and seed plants like this height because both products are granular, free-flowing and sold by weight. A blend near 60 lb per cubic foot fills a 2,000 lb bag of this size close to the brim, so it stands square on the pallet with little slack fabric. Seed is lighter, and a 1,500 lb seed bag of this height stays low enough to handle easily in a dealer's shed or off a farm wagon.
Fertilizer brings its own checks. Some blends draw moisture, so coated fabric or a liner may belong on the spec, and some products call for a particular static type. USDA's Economic Research Service publishes fertilizer use by crop and state for corn, soybeans, cotton and wheat, a useful read on where the tonnage goes, but it does not pick the bag; your product's handling data does.
Timing matters here more than in most trades. Planting and application follow the weather, so blenders want bales on the dock ahead of the season rather than in the middle of it. One trailer of empty bales carries a great many bags in a single booking, while a few pallets go LTL in smaller drops; either way we plan the lane to the plant's ZIP.
Much of that traffic runs through the Corn Belt and the Plains: Iowa, Illinois, Indiana, Nebraska, Kansas and the Dakotas, where corn, soybeans and wheat drive demand for nitrogen, phosphate and potash. Retailers there blend to a grower's prescription and use bulk bags for specialty blends, micronutrients and orders too small for a hopper truck.
- Spout top to keep dust in at the filler
- Spout bottom with a closure for metered discharge into a spreader or tender
- Coated fabric or a PE liner where moisture is a concern
- Four corner loops, 1,500 to 2,000 lb SWL, 5:1 single trip
Heavy product: stop at the label
Put portland cement in this box and the sum says 2,871 lb at 90 lb per cubic foot; dry sand says 3,190 lb at 100 lb. If the bag is sewn at 2,000 lb, the fill stops at 2,000 lb. Worked on the box: 2,000 / 90 = 22.2 cubic feet of cement, and 22.2 x 1,728 = 38,362 cubic inches, which over 1,225 cubic inches per inch of height comes to about 31 in of the 45 in body. The top third stays empty. That is safe, but it means a shorter bag or a higher rating would use the fabric better.
If you want dense product to fill this bag, the 3,000 lb and 3,300 lb ratings cover those weights: 2,871 lb of cement sits under 3,000 lb, and 3,190 lb of sand under 3,300 lb. Fabric weight, loops and seams change with the rating, so ask by SWL, not by size alone.
On the dock and in the van
The footprint matches the rest of the 35 in family: 2.5 in to spare per side on a 40 x 40 in pallet before filling, two across a 100 in trailer and 18 rows down 630 in, for 36 floor positions. At 1,914 lb of fertilizer per bag, 44,000 / 1,914 = 22 bags make the assumed payload, so 22 of the 36 spots carry a bag. At 1,436 lb of seed, 44,000 / 1,436 = 30 bags. Either way that is a full truckload of filled product. The empties going the other direction are a different job: a few pallets of bales ride LTL.
Granular product also settles in transit. A bag filled level at the plant may arrive slumped a little lower, its top fabric slack; that is the product packing down, not a loss. Settling the fill on a vibrating deck before the top is tied gives a firmer, steadier bag for the trailer.
Seed brings one more concern: treated seed. The coating is dyed and meant to stay on the kernel, so bags are handled gently, kept out of rain and emptied through a spout onto a conveyor or into a tender rather than dumped. The seed tag and the bag label travel with the lot.
Questions
How much fertilizer fits in a 35 x 35 x 45 bag?
About 1,914 lb at an assumed 60 lb per cubic foot, on a box volume of 31.9 cubic feet. A real fill lands a little lower because the sides round out, and the SWL caps it; a 2,000 lb bag is the usual match.
Can I fill a 35 x 35 x 45 bag with cement?
Yes, to its rating. On box arithmetic a 2,000 lb fill of cement at 90 lb per cubic foot takes 22.2 cubic feet, about 31 in of the 45 in body. Fill higher only with a bag rated for the weight, such as 3,000 lb.
Is 35 x 35 x 45 a standard size?
It is one of the common heights on a 35 in square base, between the 35 in cube and the 50 in bag. Bag makers sew other heights too, so send us the inches you need and we quote to them.
Request 35 x 35 x 45 in bags
Add the top, the bottom, the SWL and the count. We confirm the spec and plan the load to your dock.