diff --git a/src/ifcblenderexport/blenderbim/bim/__init__.py b/src/ifcblenderexport/blenderbim/bim/__init__.py
index 3d3bb92abd..429a4de4a6 100644
--- a/src/ifcblenderexport/blenderbim/bim/__init__.py
+++ b/src/ifcblenderexport/blenderbim/bim/__init__.py
@@ -14,6 +14,7 @@ if bpy is not None:
     from .module.model import wall as model_wall
     from .module.model import stair as model_stair
     from .module.model import door as model_door
+    from .module.model import window as model_window
     from .module.model import slab as model_slab
 
     classes = (
@@ -274,6 +275,7 @@ if bpy is not None:
         model_wall.BIM_OT_add_object,
         model_stair.BIM_OT_add_object,
         model_door.BIM_OT_add_object,
+        model_window.BIM_OT_add_object,
         model_slab.BIM_OT_add_object,
         )
 
@@ -313,6 +315,7 @@ if bpy is not None:
         bpy.types.VIEW3D_MT_mesh_add.append(model_wall.add_object_button)
         bpy.types.VIEW3D_MT_mesh_add.append(model_stair.add_object_button)
         bpy.types.VIEW3D_MT_mesh_add.append(model_door.add_object_button)
+        bpy.types.VIEW3D_MT_mesh_add.append(model_window.add_object_button)
         bpy.types.VIEW3D_MT_mesh_add.append(model_slab.add_object_button)
 
     def unregister():
@@ -336,4 +339,5 @@ if bpy is not None:
         bpy.types.VIEW3D_MT_mesh_add.remove(model_wall.add_object_button)
         bpy.types.VIEW3D_MT_mesh_add.remove(model_stair.add_object_button)
         bpy.types.VIEW3D_MT_mesh_add.remove(model_door.add_object_button)
+        bpy.types.VIEW3D_MT_mesh_add.remove(model_window.add_object_button)
         bpy.types.VIEW3D_MT_mesh_add.remove(model_slab.add_object_button)
diff --git a/src/ifcblenderexport/blenderbim/bim/module/model/window.py b/src/ifcblenderexport/blenderbim/bim/module/model/window.py
new file mode 100644
index 0000000000..3e81e94c99
--- /dev/null
+++ b/src/ifcblenderexport/blenderbim/bim/module/model/window.py
@@ -0,0 +1,114 @@
+import bpy
+import math
+from bpy.types import Operator
+from bpy.props import FloatVectorProperty, FloatProperty, IntProperty
+from bpy_extras.object_utils import AddObjectHelper, object_data_add
+from mathutils import Vector
+
+def add_object(self, context):
+    # Window lining profile
+    verts = [
+        Vector((0, 0, 0)),
+        Vector((0, -self.depth, 0)),
+        Vector((.04, -self.depth, 0)),
+        Vector((.04, 0, 0)),
+    ]
+    edges = []
+    faces = [[0, 1, 2, 3]]
+    mesh = bpy.data.meshes.new(name="Dumb Window Profile")
+    mesh.from_pydata(verts, edges, faces)
+    obj = object_data_add(context, mesh, operator=self)
+    bpy.ops.object.convert(target='CURVE')
+
+    # Window lining sweep
+    verts = [
+        Vector((0, 0, 0)),
+        Vector((0, self.overall_height, 0)),
+        Vector((self.overall_width, self.overall_height, 0)),
+        Vector((self.overall_width, 0, 0)),
+    ]
+    edges = [[0, 1], [1, 2], [2, 3]]
+    faces = []
+    mesh = bpy.data.meshes.new(name="IfcWindow/Dumb Window")
+    mesh.from_pydata(verts, edges, faces)
+    obj2 = object_data_add(context, mesh, operator=self)
+    bpy.ops.object.convert(target='CURVE')
+    obj2.data.splines[0].use_cyclic_u = True
+
+    obj2.data.dimensions = '2D'
+    obj2.data.bevel_object = obj
+
+    obj2.rotation_euler[0] = math.pi/2
+    bpy.ops.object.convert(target='MESH')
+    bpy.ops.object.transform_apply(location=False)
+    bpy.data.objects.remove(obj, do_unlink=True)
+
+    # Window panel
+    verts = [
+        Vector((.04, (self.depth/2)+.005, .04)),
+        Vector((.04, (self.depth/2)-.005, .04)),
+        Vector((self.overall_width-.04, (self.depth/2)-.005, .04)),
+        Vector((self.overall_width-.04, (self.depth/2)+.005, .04)),
+    ]
+    edges = []
+    faces = [[0, 1, 2, 3]]
+    mesh = bpy.data.meshes.new(name="Dumb Window Panel")
+    mesh.from_pydata(verts, edges, faces)
+    obj3 = object_data_add(context, mesh, operator=self)
+    modifier = obj3.modifiers.new('Panel Height', 'SOLIDIFY')
+    modifier.offset = 1
+    modifier.thickness = self.overall_height-.08
+    bpy.ops.object.convert(target='MESH')
+
+    ctx = bpy.context.copy()
+    ctx['active_object'] = obj2
+    ctx['selected_editable_objects'] = [obj2, obj3]
+    bpy.ops.object.join(ctx)
+
+    # Window Opening
+    verts = [
+        Vector((0, -.1, 0)),
+        Vector((0, self.depth+.1, 0)),
+        Vector((self.overall_width, self.depth+.1, 0)),
+        Vector((self.overall_width, -.1, 0)),
+    ]
+    edges = []
+    faces = [[0, 1, 2, 3]]
+    mesh = bpy.data.meshes.new(name="Dumb Window Opening")
+    mesh.from_pydata(verts, edges, faces)
+    obj4 = object_data_add(context, mesh, operator=self)
+    modifier = obj4.modifiers.new('Panel Height', 'SOLIDIFY')
+    modifier.offset = -1
+    modifier.thickness = self.overall_height
+    bpy.ops.object.convert(target='MESH')
+    obj4.display_type = 'WIRE'
+    obj4.parent = obj2
+    obj4.matrix_parent_inverse = obj2.matrix_world.inverted()
+    obj4.name = 'IfcOpeningElement/Dumb Window Opening'
+    attribute = obj4.BIMObjectProperties.attributes.add()
+    attribute.name = 'PredefinedType'
+    attribute.string_value = 'OPENING'
+
+    attribute = obj2.BIMObjectProperties.attributes.add()
+    attribute.name = 'PredefinedType'
+    attribute.string_value = 'WINDOW'
+
+
+class BIM_OT_add_object(Operator, AddObjectHelper):
+    bl_idname = "mesh.add_window"
+    bl_label = "Dumb Window"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    overall_width: FloatProperty(name='Overall Width', default=.7)
+    overall_height: FloatProperty(name='Overall Height', default=1)
+    depth: FloatProperty(name='Depth', default=.1)
+
+    def execute(self, context):
+        add_object(self, context)
+        return {'FINISHED'}
+
+
+def add_object_button(self, context):
+    self.layout.operator(
+        BIM_OT_add_object.bl_idname,
+        icon='PLUGIN')