diff --git a/container/slot/IOptionalSlotHost.java b/container/slot/IOptionalSlotHost.java
new file mode 100644
index 00000000..40f78b9f
--- /dev/null
+++ b/container/slot/IOptionalSlotHost.java
@@ -0,0 +1,8 @@
+package appeng.container.slot;
+
+public interface IOptionalSlotHost
+{
+
+	boolean isSlotEnabled(int idx, OptionalSlotFake osf);
+
+}
diff --git a/container/slot/OptionalSlotFake.java b/container/slot/OptionalSlotFake.java
new file mode 100644
index 00000000..0331440e
--- /dev/null
+++ b/container/slot/OptionalSlotFake.java
@@ -0,0 +1,29 @@
+package appeng.container.slot;
+
+import net.minecraft.inventory.IInventory;
+
+public class OptionalSlotFake extends SlotFake
+{
+
+	int invSlot;
+	final int groupNum;
+	IOptionalSlotHost host;
+
+	int srcX;
+	int srcY;
+
+	public OptionalSlotFake(IInventory inv, IOptionalSlotHost containerBus, int idx, int x, int y, int offX, int offY, int groupNum) {
+		super( inv, idx, x + offX * 18, y + offY * 18 );
+		srcX = x;
+		srcY = y;
+		invSlot = idx;
+		this.groupNum = groupNum;
+	}
+
+	@Override
+	public boolean isEnabled()
+	{
+		return host.isSlotEnabled( groupNum, this );
+	}
+
+}