1 files changed, 4 insertions, 2 deletions

diff --git a/fanduct.scad b/fanduct.scad
index a18ce56..132b9e8 100644
--- a/fanduct.scad
+++ b/fanduct.scad
@@ -22,6 +22,8 @@ function hypothenuse(a,b) = sqrt(pow(a,2)+pow(b,2));
 silicone_shell = 2;
-heater_clearance = max(
+heater_clearance = dual
+       ? max(20,15.5) - 4.5 + silicone_shell
+       : max(
                 hypothenuse(16/2     +silicone_shell, 20-4.5 +silicone_shell),// E3D v6
                 hypothenuse(11.5-4.5 +silicone_shell, 15.5   +silicone_shell)// E3D volcano
-);
+       );