Net Weight
vs
Gross Weight

Filament Weight Only

Net Weight

Net Weight is the weight, or mass, of the goods themselves without any packaging. Which Includes Only Filament Weight.

Filament Weight + Spool Weight + Packaging Weight

Gross Weight

Gross Weight is the total weight of a shipment of goods, including their packaging.  Which Includes Filament + Spool + Packaging Weight.

net weight vs gross weight