diff --git a/assets/materials/concrete/observationwall_001a.ims b/assets/materials/concrete/observationwall_001a.ims
new file mode 100644
index 0000000..9652b93
--- /dev/null
+++ b/assets/materials/concrete/observationwall_001a.ims
@@ -0,0 +1 @@
+-resize 64x64
\ No newline at end of file
diff --git a/assets/materials/static.skm.yaml b/assets/materials/static.skm.yaml
index cdc002f..cb2b9e5 100644
--- a/assets/materials/static.skm.yaml
+++ b/assets/materials/static.skm.yaml
@@ -20,6 +20,22 @@ materials:
       tileSizeS: 1
       tileSizeT: 2
 
+  concrete/observationwall_001a:
+    gDPSetTile: 
+      filename: ../../portal_pak_modified/materials/concrete/observationwall_001a.png
+      siz: G_IM_SIZ_8b
+      fmt: G_IM_FMT_I
+
+    gDPSetCombineMode: G_CC_DECALRGB
+    gDPSetCycleType: G_CYC_1CYCLE
+
+    gSPGeometryMode:
+      clear: [G_LIGHTING]
+
+    properties:
+      tileSizeS: 2
+      tileSizeT: 2
+
   metalwall048b:
     gDPSetTile:
       filename: ../../portal_pak_modified/materials/metal/metalwall048b.png
diff --git a/assets/models/window_frame.blend b/assets/models/window_frame.blend
index a003fd5..bd4dedd 100644
Binary files a/assets/models/window_frame.blend and b/assets/models/window_frame.blend differ
diff --git a/assets/models/window_frame_small.blend b/assets/models/window_frame_small.blend
new file mode 100644
index 0000000..296d7e0
Binary files /dev/null and b/assets/models/window_frame_small.blend differ
diff --git a/assets/test_chambers/test_chamber_00/test_chamber_00_0.blend b/assets/test_chambers/test_chamber_00/test_chamber_00_0.blend
index db4e12a..3f2d1c2 100644
Binary files a/assets/test_chambers/test_chamber_00/test_chamber_00_0.blend and b/assets/test_chambers/test_chamber_00/test_chamber_00_0.blend differ