diff --git a/logicworld-subassembly/src/lw.rs b/logicworld-subassembly/src/lw.rs
index aeecf9b..c337d3b 100644
--- a/logicworld-subassembly/src/lw.rs
+++ b/logicworld-subassembly/src/lw.rs
@@ -145,6 +145,7 @@ impl CircuitBoard {
         return custom_data;
     }
 }
+
 pub struct Label<'a> {
     text: &'a str,
     color: Vec<u8>,
@@ -225,6 +226,18 @@ impl<'a> Label<'a> {
     }
 }
 
+pub struct Mount {
+    height: Int,
+}
+impl Mount {
+    pub fn new(height: Int) -> Self {
+        Self { height }
+    }
+    pub fn custom_data(&self) -> Vec<u8> {
+        return Vec::from(self.height.to_le_bytes());
+    }
+}
+
 impl<T: BinarySerializable> BinarySerializable for Vec<T> {
     fn write_to<W: Write>(&self, writer: &mut W) -> io::Result<()> {
         writer.write_all(&(self.len() as Int).to_le_bytes())?;