diff --git a/case/top.scad b/case/top.scad
new file mode 100644
index 0000000..0d0a135
--- /dev/null
+++ b/case/top.scad
@@ -0,0 +1,20 @@
+$fn = 72;
+
+case_width_top     = 317.5000;
+case_width_bottom  = 320.0000;
+case_length_top    = 150.0000;
+case_length_bottom = 151.5000;
+
+wall_width  =  2.5000;
+wall_height = 17.2500;
+
+accent_width    =  1.0000;
+accent_y_stride   = 19.0500; /* last accent is 4mm from top of case */
+accent_y_bottom = 12.0000;
+
+fin_width     =  2.0000;
+fin_gap_width =  2.0000;
+fin_height    = 12.0000;
+fin_x_stride  =  2.0000;
+fin_x_first   = 139.7500;
+fin_count     = 32;