diff --git a/SimPEG/visulize/vtk/vtkTools.py b/SimPEG/visulize/vtk/vtkTools.py
index 50387a14..bd6642d4 100644
--- a/SimPEG/visulize/vtk/vtkTools.py
+++ b/SimPEG/visulize/vtk/vtkTools.py
@@ -240,15 +240,34 @@ class vtkTools(object):
 		vtkObj.GetCellData().SetActiveScalars(scalarName)
 		
 	@staticmethod
-	def makeRectiVTKVOIThres(vtkObj):
+	def makeRectiVTKVOIThres(vtkObj,VOI,limits):
 		"""Make volume of interest and threshold for rectilinear grid."""
+		# Check for the input
 		cellCore = vtk.vtkExtractRectilinearGrid()
+		cellCore.SetVOI(VOI)
 		cellCore.SetInput(vtkObj)
-		cellCore.SetVOI(vtkObj.GetExtent())
+		
 		cellThres = vtk.vtkThreshold()
 		cellThres.AllScalarsOn()  
 		cellThres.SetInputConnection(cellCore.GetOutputPort()) 
-		cellThres.ThresholdByUpper(-1)
+		cellThres.ThresholdByUpper(limits[0])
+		cellThres.ThresholdByLower(limits[1])
+		cellThres.Update()
+		return cellThres.GetOutput(), cellCore.GetOutput()
+	
+	@staticmethod
+	def makeUnstructVTKVOIThres(vtkObj,extent,limits):
+		"""Make volume of interest and threshold for rectilinear grid."""
+		# Check for the input
+		cellCore = vtk.vtkExtractUnstructuredGrid()
+		cellCore.SetExtent(extent)
+		cellCore.SetInput(vtkObj)
+		
+		cellThres = vtk.vtkThreshold()
+		cellThres.AllScalarsOn()  
+		cellThres.SetInputConnection(cellCore.GetOutputPort()) 
+		cellThres.ThresholdByUpper(limits[0])
+		cellThres.ThresholdByLower(limits[1])
 		cellThres.Update()
 		return cellThres.GetOutput(), cellCore.GetOutput()
 
diff --git a/SimPEG/visulize/vtk/vtkView.py b/SimPEG/visulize/vtk/vtkView.py
index 334561ba..f331e1d7 100644
--- a/SimPEG/visulize/vtk/vtkView.py
+++ b/SimPEG/visulize/vtk/vtkView.py
@@ -89,11 +89,13 @@ class vtkView(object):
 
 		# Sort out the actor
 		if imageType == 'cell':
-			self._vtkobj, self._core = vtkSP.makeRectiVTKVOIThres(self._cell)
+			self._vtkobj, self._core = vtkSP.makeRectiVTKVOIThres(self._cell,self.extent,self.limits)
 		elif imageType == 'face':
-			self._vtkobj, self._core = vtkSP.makeRectiVTKVOIThres(self._face)
+			extent = [self._mesh.vectorNx[self.extent[0]], self._mesh.vectorNx[self.extent[1]], self._mesh.vectorNy[self.extent[2]], self._mesh.vectorNy[self.extent[3]], self._mesh.vectorNz[self.extent[4]], self._mesh.vectorNz[self.extent[5]] ]
+			self._vtkobj, self._core = vtkSP.makeUnstructVTKVOIThres(self._face,extent,self.limits)
 		elif imageType == 'edge':
-			self._vtkobj, self._core = vtkSP.makeRectiVTKVOIThres(self._edge)
+			extent = [self._mesh.vectorNx[self.extent[0]], self._mesh.vectorNx[self.extent[1]], self._mesh.vectorNy[self.extent[2]], self._mesh.vectorNy[self.extent[3]], self._mesh.vectorNz[self.extent[4]], self._mesh.vectorNz[self.extent[5]] ]
+			self._vtkobj, self._core = vtkSP.makeUnstructVTKVOIThres(self._edge,extent,self.limits)
 		else:
 			raise Exception("{:s} is not a vailid imageType. Has to be 'cell':'face':'edge'".format(imageType))