diff --git a/monitor/modelo.py b/monitor/modelo.py
index a55c061..5fa524f 100644
--- a/monitor/modelo.py
+++ b/monitor/modelo.py
@@ -1,7 +1,8 @@
 import cadquery2 as cq
 from cadquery2 import exporters
 
-shell_t = 2.5
+# Shell thickness
+shell_t = 2
 
 # width, length VISIBLE WITHIN THE BEZEL
 screen_w = 223