Amazon Case Pack Requirements 2026
A current-year operator reference on Amazon FBA case pack requirements for 2026: case quantity rules, labeling, weight and dimension limits, and the compliance checks that keep an inbound shipment from getting flagged.
- The short answer
- One SKU in one condition per case, the same number of units in every case across the shipment, a scannable barcode on every unit, and an exterior case label that matches the quantity declared in the inbound plan.
Why the declared count is the whole game
Amazon receives a case pack at the case level: it scans the case and trusts your declared units-per-case. That trust is the point of case-packing, and it is also what multiplies one bad count across an entire shipment.
A case pack is a manufacturer-sealed or prep-built box holding multiple identical units of one SKU in one condition. Instead of scanning each item, the fulfillment center scans the case. That moves volume through receiving faster, but it also means an inaccurate count propagates across the whole shipment, not just one carton.
The defining rule is uniformity. When you build an inbound plan and declare a SKU as case-packed, Amazon asks for the number of cases and the units per case, then multiplies. There is no field for a partial or odd case. If your supplier ships full cases of 24 and one remainder box of 11, the 11-unit box cannot ride inside the case-packed declaration. It is handled as individual units or held back.
This is where most discrepancies originate. A case marked 24 that actually holds 23, a mixed pallet where two SKUs share a carton, or a remainder box folded into the case count all produce a received-quantity mismatch. If case quantities vary across the shipment, the inventory no longer qualifies as case-packed at all and must be declared as individual units, which changes how the inbound plan is built and how the boxes are labeled.
What makes a case pack valid
For a case pack to be valid in 2026, four conditions hold at once.
One case quantity
Every case in the shipment contains the same number of units, meaning one consistent case quantity per SKU.
One SKU, one condition
All units inside a case are the same SKU in the same condition.
A unit-level barcode
Every individual unit carries a scannable FNSKU label, unless the brand owner is approved to use manufacturer barcodes. The label has to be readable, not obscured by a poly bag seam, and applied over any existing retail barcode that could cause a misscan.
A case-level label
The case exterior carries a label generated from the inbound plan, identifying the shipment and the case contents. It does not replace the unit labels inside the case. Both are required.
Poly-bagged units carry their own overlay: a suffocation warning once the bag opening reaches 5 inches or more, and a bag transparent enough for the unit barcode to scan or carrying its own scannable label. Bundled or kitted units sold as one ASIN need a “sold as set, do not separate” marking, so the fulfillment center does not split them into individual sellable units.
Weight and dimension limits
Standard-size case packs in 2026 follow Amazon’s current inbound box constraints, which changed on June 20, 2025. Oversized units follow separate dimensional rules and are not covered here.
- Case weight
- 50 lb maximum
- Box dimensions
- 36 by 25 by 25 inches
- Units per case
- 150 maximum
A case may exceed 50 lb only when a single unit inside it exceeds 50 lb. A single item over 50 lb takes a Team Lift label; over 100 lb it takes a Mechanical Lift label instead. Either goes on the top and all four sides, five labels in all, and you generate them yourself because Amazon does not supply them. If a case crosses the limit only because it holds too many units, the answer is fewer units per case, not an overweight label: that exception exists for genuinely heavy single items, not for over-stuffed cartons.
Build case packs yourself, or hand them off
The rules are not complicated. Holding a consistent physical count across hundreds of cases, month after month, is the part that actually breaks.
Keep building case packs in house when
- Your supplier ships clean, uniform cases and a sample check is enough.
- You run a small number of SKUs with one case quantity each.
- You have floor space to stage, count, and label cases without displacing other work.
- You are moving under 500 units a month. That is below the floor Marketplace Prep works to, and at that size building case packs yourself is almost always the right call.
Bring in a prep center when
- Supplier case quantities do not match what arrives, and you are reconciling counts after the fact.
- You are declaring case packs from the supplier’s stated quantity rather than a physical count.
- Case-packed shipments are getting flagged at receiving and reconciliation is holding up your inventory.
- You are shipping 3,000 or more units a month, which is what Marketplace Prep is built for.
Related Questions
What are Amazon case pack requirements in 2026?
Amazon case pack requirements in 2026 require that each case hold a single SKU in a single condition, that every case in the shipment contain the same number of units, that each unit carry a scannable FNSKU or enrolled manufacturer barcode, and that the case exterior carry a label matching the declared case quantity. Boxes are capped at 36 inches long by 25 wide by 25 high and 50 lb. The length rose from 25 to 36 inches on June 20, 2025, but width and height still may not exceed 25. Amazon Warehousing and Distribution holds to 25 by 25 by 25. The declared units-per-case must exactly match the physical count, because Amazon receives case-packed inventory at the case level.
How many units can be in an Amazon case pack?
Amazon caps a case pack at 150 units. The box itself is capped at 36 by 25 by 25 inches and 50 lb. The practical constraint is that every case in the shipment must hold the same number of units. If a full case would exceed the weight limit, the answer is fewer units per case rather than an overweight marking, which is reserved for genuinely heavy single units.
Do case pack units still need FNSKU labels?
Yes. Each individual unit inside a case pack needs a scannable FNSKU label unless the brand owner is approved to use manufacturer barcodes. The case-level exterior label does not replace the unit labels inside the case; both are required. The unit label must be readable and applied so it does not conflict with any existing retail barcode.
What happens if case quantities are not uniform across a shipment?
If case quantities vary, the inventory no longer qualifies as case-packed and must be declared as individual units, which changes how the inbound plan and box labels are built. A remainder or partial box cannot be folded into the case-packed declaration. Declaring a partial box as a full case is one of the most common causes of received-quantity mismatches.
What is the weight limit for an Amazon case pack?
Standard-size case packs are limited to 50 lb. A case may exceed 50 lb only when a single unit inside it weighs more than 50 lb. A single item over 50 lb takes a Team Lift label; over 100 lb it takes a Mechanical Lift label instead, applied to the top and all four sides, five labels in all. An overweight case caused by too many units, rather than one heavy unit, is a compliance error and needs fewer units per case instead.
Why do case-packed shipments get flagged at receiving?
Case-packed shipments are flagged most often when the declared units-per-case does not match the physical count, when a case mixes SKUs or conditions, when units are missing scannable barcodes, or when a partial box is declared as a full case. Because Amazon reconciles at the case level, a single per-case error is multiplied across every case in the shipment. That turns a fast case-level receive into a manual exception and delays reconciliation.
Does Marketplace Prep handle Amazon case-pack compliance?
Yes. Marketplace Prep builds FBA shipment plans in its own software, straight from your Seller Central shipment plan, so the declared case quantities in the inbound plan match the units actually scanned and labeled on the floor. The team handles FNSKU labeling, poly-bagging with the correct warnings, inspection, and case-pack building for wholesale and private label inventory. Marketplace Prep is a Fort Worth, Texas prep center serving established sellers and growing brands.
Check these before the pallet ships
Each of these turns a fast case-level receive into a manual exception, which is where reconciliation delays come from. Run them whether or not you ever call us.
The count
Declared units-per-case does not match the physical count in one or more cases.
One SKU, one condition
Mixed SKUs or mixed conditions inside a single case.
The unit barcodes
Missing, unscannable, or double-barcoded units.
The remainder box
A remainder or partial box declared as a full case.
The lift marking
An overweight case without the required lift marking, or an overweight case caused by unit count rather than a heavy unit.
Poly-bagged units
Bagged units missing the suffocation warning, or with a barcode that will not scan through the bag.
A prep center that runs case packs at volume builds the inbound plan from the actual physical count rather than the supplier’s stated case quantity, then verifies unit labels, case labels, and weight before the shipment leaves. Marketplace Prep executes FBA shipment plans in its own software, built directly off your Seller Central shipment plan, so the declared case quantities tie to the units actually scanned and labeled on the floor. We are a Fort Worth, Texas prep center serving established Amazon sellers and growing brands.
Where to go from here
Wholesale Prep
Bulk receiving, inspection, sorting, and FBA compliance prep for case-pack inventory moving at volume.
FBA Prep
Receiving, FNSKU labeling, poly-bagging, inspection, and bundling, executed off your Seller Central shipment plan.
Private Label Prep
Custom packaging, kitting, insert placement, and quality assurance for brands that own their SKUs.