Buidler Design Pattern : Accessing/Passing model data to/in Concrete classes

Here is my builder interface

public interface IContainerBuilder
{
  void SetSections();
  void SetSides();
  void SetArea();

  WebControl GetContainer();
}

and this is mine ConcreteBuilder

public class SingleContainerBuilder:BaseProperties, IContainerBuilder
    {
        Panel panel = new Panel();
        public void SetSections()
        {
            //panel.Height = value coming from model
            //panel.Width = value coming from model
        }

        public void SetSides()
        {
            //panel.someproperty = //value coming from model,
            //panel.someotherproperty = //value coming from model,
        }

        public void SetArea()
        {
            throw new NotImplementedException();
        }

        public System.Web.UI.WebControls.WebControl GetContainer()
        {
            return panel;

        }
    }

and Director is here

public class ContainerBuilder
    {
        private readonly IContainerBuilder objBuilder;

        public Builder(IContainerBuilder conBuilder)
        {
            objBuilder = conBuilder;
        }

        public void BuildContainer()
        {
            objBuilder.SetArea();
            objBuilder.SetSections();
            objBuilder.SetSides();
            ;
        }

        public WebControl GetContainer()
        {
            return this.objBuilder.GetContainer();
        }    
    }

and thats how i am calling it from default page

var conBuilder = new ContainerBuilder(new SingleContainerBuilder());
conBuilder.BuildContainer();
var container = conBuilder.GetContainer();

Now problem/Confusion i am having is how do i pass Model Data to concrete classes? Reason i am confused/stuck is there could be number of different containers (more than 20-30 could be), does each different type of container has to go and grab data from model or there can be any better approach for it?

Second i am confused with, My Model is in different Library. Do i need to create a copy of model in my web project and populate my local model from that Master Model or should i directly query Master Model for Concrete Class Properties? As you can see my SingleContainer Contains BaseProperties which is local declaration of the properties that are already in Master Model and i don't see or understand the point of local Model and i am not sure i am right here or not.

Sorry i am new to Design Patterns.

Any Help will be really Appreciated,

Thanks