I've seen shipments get rejected over label size. Not because the barcode was wrong — the barcode scanned perfectly. But because the label itself was 0.8 inches wide instead of 1 inch, and Amazon's warehouse team couldn't process it. Label size is one of those things that looks trivial until it costs you a shipment delay.
Here's every Amazon label type with exact dimensions, so you don't have to guess.
💡 Quick reference: FNSKU label = 1×2 inches minimum. Shipping label = 4×6 inches. Both need minimum 300 DPI. CODE128 barcode format for FNSKU.
📦 Generate your FNSKU barcode free — CODE128, download PNG or SVG, print-ready quality.
Generate FNSKU Barcode →1. FNSKU Label (Product Label)
The FNSKU (Fulfillment Network Stock Keeping Unit) label is the most important label for FBA sellers. It goes directly on your product and tells Amazon exactly what the item is when it arrives at the warehouse.
- Minimum size: 1 inch × 2 inches (25.4mm × 50.8mm)
- Recommended size: 1 inch × 2.125 inches (standard Dymo 30252)
- Barcode format: CODE128
- Minimum DPI: 300 DPI (600 DPI recommended for thermal printers)
- Quiet zone: Minimum 1/8 inch (3.2mm) on each side of the barcode
- Font: Include the human-readable FNSKU text below the barcode
⚠️ Important: The FNSKU label must completely cover any existing manufacturer barcode (EAN-13, UPC) on the product. If Amazon's scanner reads the manufacturer barcode instead of the FNSKU, your inventory can be commingled with other sellers' stock.
2. Shipping Label (Box Label)
The shipping label goes on the outside of each box sent to an Amazon fulfillment center. Amazon generates this label through Seller Central when you create a shipment plan.
- Standard size: 4 inches × 6 inches (101.6mm × 152.4mm)
- Generated by: Amazon Seller Central (you cannot make these yourself)
- Placement: One per box, on a flat surface, not spanning edges or corners
- Printer: Thermal printer (Zebra ZP450, Dymo 4XL) or regular printer on 4×6 label paper
3. Suffocation Warning Label
Required on any poly bag with an opening of 5 inches or larger. This is a safety requirement — Amazon will reject poly-bagged products without it.
- Minimum size: 1 inch × 1 inch (25.4mm × 25.4mm)
- For larger bags (12"+ opening): The warning text must be at least 10pt font
- Required text: "WARNING: To avoid danger of suffocation, keep this plastic bag away from babies and children..."
- Placement: On the bag itself or printed on the bag — not on a separate piece of paper inside
4. Expiry Date Label
Required on products with expiration dates — food, supplements, cosmetics, baby products. Amazon requires the expiry date to be readable without opening the packaging.
- Minimum size: 0.5 inch × 1 inch (12.7mm × 25.4mm)
- Date format: MM-DD-YYYY or MM-YYYY
- Font size: Minimum 36 point font, bold
- Placement: Visible without opening or unwrapping the product
5. Bundle / Set Label
If you sell a bundle of multiple products (e.g., 3-pack or gift set), Amazon requires a "Sold as Set" label on the outside packaging so warehouse staff don't separate the items.
- Minimum size: 1 inch × 2 inches (25.4mm × 50.8mm)
- Required text: "Sold as Set — Do Not Separate"
- Placement: Clearly visible on the outside of the bundle packaging
- Also needed: Single FNSKU label for the bundle as a whole (not individual items)
6. Fragile / This Way Up Label
Not strictly required by Amazon, but strongly recommended for fragile products or items that must be stored upright. Helps warehouse staff handle items correctly.
- Recommended size: 2 inches × 2 inches minimum
- Standard Dymo size: 2 inches × 2 inches (Dymo 30327)
Complete Reference Table
| Label Type | Min. Size | Recommended Size | Required? |
|---|---|---|---|
| FNSKU / Product | 1" × 2" | 1" × 2.125" (Dymo 30252) | ✅ Required |
| Shipping / Box | 4" × 6" | 4" × 6" | ✅ Required |
| Suffocation Warning | 1" × 1" | 1" × 1.5" | ✅ If poly bag ≥5" |
| Expiry Date | 0.5" × 1" | 1" × 1" | ✅ Perishables |
| Bundle / Set | 1" × 2" | 1.5" × 3" | ✅ If bundled |
| Fragile | 2" × 2" | 2" × 2" | ⚡ Recommended |
What Printer Should You Use?
Option 1: Thermal Label Printer (Recommended)
A thermal printer is the best investment for any FBA seller shipping more than 20 units per month. The labels are more durable, don't smear, and scan reliably even after warehouse handling.
- Dymo LabelWriter 450: Best for small-volume sellers. Uses 1×2.125" Dymo 30252 labels — perfect for FNSKU.
- Zebra ZD420 / ZD621: Best for medium to high volume. More durable, faster, supports wider label rolls.
- Rollo Label Printer: Good budget-friendly option. Compatible with most label sizes including 4×6 shipping labels.
Option 2: Regular Inkjet or Laser Printer
You can print FNSKU labels on a regular printer using Avery label sheets (Avery 5160 or 5163 are popular with Amazon sellers). It works — but inkjet labels can smear if they get wet, and laser-printed labels can sometimes peel in warehouse conditions.
✅ Free tip: Print a test sheet first on plain paper, hold it up to a window against the label sheet, and check alignment before printing on your actual label stock. Saves wasted labels.
How to Generate Your FNSKU Barcode Image
Amazon assigns your FNSKU code in Seller Central. Once you have it (it looks like X001ABC123), here's how to generate the barcode image for free:
- Go to barkodkarekod.com CODE128 generator
- Enter your FNSKU code (e.g., X001ABC123)
- Set height to at least 50px (more for larger labels)
- Download as SVG for best print quality
- Place the SVG in your label template in Word, Canva or any design tool
- Print at 300 DPI minimum
🔲 Generate your FNSKU barcode free — enter your FNSKU code, download SVG for print.
Generate FNSKU →Common Mistakes That Get Shipments Rejected
- Label too small — FNSKU labels under 1×2 inches often fail warehouse scanners
- Not covering the manufacturer barcode — Amazon may scan the wrong code and commingle your stock
- Low resolution print — printing at 72 DPI on an inkjet produces blurry barcodes that fail scanners
- Label on a curved surface — barcodes on curved bottles or rounded packaging often fail scanners. Apply on the flattest available surface.
- Label spanning a seam or edge — the barcode must be on a flat, uninterrupted surface
- Transparent labels on transparent packaging — the barcode needs contrast. Use white label stock even on clear packaging.
Frequently Asked Questions
What size label does Amazon FBA use?
FNSKU labels must be at least 1×2 inches (25.4×50.8mm). The standard Dymo 30252 at 1×2.125 inches is the most commonly used size.
What barcode format does Amazon use for FNSKU?
CODE128. Enter your FNSKU code (starts with X0 or B0) in the CODE128 generator at barkodkarekod.com to get the barcode image for free.
Can I print Amazon labels at home?
Yes — on a thermal printer (recommended) or regular printer with Avery label sheets. Minimum 300 DPI, CODE128 barcode format.
What size is the Amazon shipping label?
4×6 inches (101.6×152.4mm) — the standard carrier label size. Generated by Amazon Seller Central, not made manually.
Generate Your Amazon FNSKU Barcode Free
CODE128 format, print-ready SVG, no signup. Enter your FNSKU and download.
Generate FNSKU Barcode →