They appear only when a carrier module is on and feed label generation:

• Dimensions & Weight (shown when FedEx or Shippo is on): Weight per Meal, Box Weight, Length, Width, Height in your system units.
• Shippo settings: Weight per Meal (lb), Weight per Box (lb), Max Meals per Box, box Length/Width/Height (in), Dry Ice Weight (lb), Insured Value Default ($) and an Enable Dry Ice toggle.
• FedEx settings: a Dry Ice checkbox (currently the only special-service option), Insured Value (Max $100) and Dry Ice Weight.

These values are sent to the carrier when shipping labels are created for orders using this bag type.