Seller Fulfilled Prime size tier weight and dimensions
This article applies to selling in: United States

Seller Fulfilled Prime size tier weight and dimensions

The Seller Fulfilled Prime size tier is used to calculate a seller’s delivery speed performance compared to the program’s minimum requirements. Prime customer expectations for delivery speed differs by item size. The size tier definitions and minimum delivery speed thresholds exist so that the delivery speed of Seller Fulfilled Prime offers is similar to customer expectations of other Prime offers, for the applicable size tier. There are three size tiers for Seller Fulfilled Prime: standard-size, oversize, and extra large. The size tier is automatically determined based on the item package dimensions for items associated to a Prime shipping template.

Seller Fulfilled Prime size tier definitions

Size tier Definition
Standard-size

An item will be considered standard-size if its package weight and dimensions meet all of the following:

  • The length (or longest side) is 18 inches or less.
  • The width (or median side) is 14 inches or less.
  • The height (or shortest side) is 8 inches or less.
  • The weight is 20 lb or less.

Oversize An item will be considered oversize if its package weight and dimensions exceed any of the standard-size conditions but do not meet any of the extra large conditions.
Extra large

An item will be considered extra large if its package weight and dimensions meet any of the following:

  • The length or longest side is 96 inches or more.
  • The length plus girth is 130 inches or more. The girth is 2 x height + 2 x width.
  • The weight is 50 lb or more.
  • The item is a television and the length or longest side is 40 inches or more.

Note: If a product is sold as a set, the weight and dimensions are the combined total of all of the items in the set packaged together.

As a Seller Fulfilled Prime seller, you can go to the Manage Seller Fulfilled Products page to view your item’s size tier (Column: Size tier) and package weights and dimensions (Column: Item package dimensions). In the Item package dimensions column, the longest side of the product will be displayed as length, the median side as width, and the shortest side as height.

Note: If the item’s weight and dimensions are not populated, the item will be considered standard-size until these are populated and the size tier is recalculated.

Update package weight and dimensions

You can update a product’s package weight and dimensions either through the Manage Seller Fulfilled Products page or through the Manage Inventory page:

  1. Click the Update link in column Item package dimensions on the Manage Seller Fulfilled Products page for the item you want to update. This will take you to the Edit Product Info page. On the Shipping tab, you can update the following fields:
    • Item Package Dimensions (includes length, width, and height fields)
    • Package Weight

    When you have edited the fields for your product, click Save and finish.

  2. You can also update your product’s package weight and dimensions directly through the Manage Inventory page. Go to Manage Inventory and click Edit to the right of the product you want to update. This will take you to the Edit Product Info page. On the Shipping tab, you can update the following fields:
    • Item Package Dimensions (includes length, width, and height fields)
    • Package Weight

    When you have edited the fields for your product, click Save and finish.

  3. To update more than one product at a time through an inventory file upload, follow these steps: Under the Inventory menu, choose Manage all inventory, then select Add a product, then select I’m uploading a file to add multiple products. Select the applicable update type and generate a template. Update the following fields and re upload the template:
    • Package_height
    • Package_width
    • Package_length
    • Package_dimensions_unit_of_measure
    • Package_weight
    • Package_weight_unit_of_measure

It may take up to 48 hours for an item’s size tier to update on Manage Seller Fulfilled Products after these attributes have been updated.

Note: Amazon may verify the package weight and dimensions of a product using representative samples. If there is a difference between Amazon’s information and your information, Amazon’s information about a product’s package weight and dimensions will be displayed on the Manage Seller Fulfilled Products page and will be used to classify the product as standard-size, oversize, or extra large. Amazon may change its information about a product’s package weight and dimensions from time to time to reflect updated measurements.

Submit your request

After updating a product’s package weight and dimensions, if you still believe that the package weight and dimensions displayed on the Manage Seller Fulfilled Products page are inaccurate, reach out to Selling Partner Support and open a research request.

Provide the following information in your request:

  • Your values of package weight and dimensions for the product with the units of measure
  • Photos of the product with each dimension measured using a tape measure (length, width and height) and weight measured using a scale.

We will review your request, and if valid, we will update the product’s package weight and dimensions with your information.

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