What is it?
The Weight quote shipping fulfillment module lets you assigns a shipping rate to products based on weight.
How to enable it
The module is included in the Ubercart core package, and is enabled in Drupal at Administer » Site building » Modules in the section "Ubercart - fulfillment".
How to configure it?
Once enabled, the module is configured in Administer » Store administration » Configuration » Shipping quote settings under "Quote methods".
More to follow.