Amazon FBA Wholesale: Individual Units vs Case Pack — Shipping a Mixed-SKU Carton the Right Way

One of the most confusing moments in your first wholesale shipment is the packing step. Your supplier ships one box with several different products inside, but Amazon asks you to pick a packing option — and the wording isn't obvious.

Let's say the supplier ships one carton (roughly 13×13×13 inches, ~16 lbs) containing 4 different SKUs — 48 + 30 + 30 + 10 = 118 units total.

The two packing options

Amazon gives you two ways to describe how your inventory is packed: Case Pack and Individual Units. They mean very different things.

Case Pack = one SKU per box

Case Pack means every carton holds only ONE product. If you had 4 SKUs in 4 separate boxes, that's Case Pack. Amazon would then expect 4 cartons.

So Case Pack is wrong when your supplier ships everything mixed together in a single box.

Individual Units = mixed SKUs in one box

Choose Individual Units when:

• Multiple SKUs are packed together in one carton
• Amazon needs to know exactly how many units of each SKU are inside
• You have one box, not one-box-per-product

For our example — one carton, four SKUs — Individual Units is correct. If you pick Case Pack here, Amazon expects four boxes, your one box won't match, and receiving gets delayed.

The correct workflow

• Add all the SKUs to the shipment
• In packing details, choose Individual Units (not Create Packing Template)
• Enter carton info: 1 box, the dimensions, and the weight
• Amazon generates a Shipment ID, a Box Label, and the FNSKU labels

Labels — what goes where

• FNSKU label goes on EVERY single unit (48 units = 48 labels)
• The Shipment Box Label goes on the OUTSIDE of the carton — one carton, one box label
• Your supplier applies all of these before shipping

Before you create any shipment, ask your supplier

• How many cartons will the order be packed in?
• What are the carton dimensions and weight?
• Is everything in one carton, or one product per carton?
• Which carrier (USPS / UPS / FedEx) and the tracking number after dispatch?

The rule is simple: the supplier's actual packing decides the Amazon workflow — never guess it inside Seller Central.