diff --git a/README.md b/README.md
index f193862..61dd0e8 100644
--- a/README.md
+++ b/README.md
@@ -43,7 +43,7 @@ Where:
 - `template`: `classic_brick`, `classic_plate`, `classic_tile`, or `mechanical_axle`
 - `width`: studs in X (`classic_brick`: 1-10, `classic_plate`/`classic_tile`: 1-16)
 - `length`: studs in Y (`classic_brick`: 1-12, `classic_plate`/`classic_tile`: 1-16)
-- `height`: plate units in Z (`classic_brick`: 1-9)
+- `height`: plate units in Z (`classic_brick`: 1-24)
 - `l`: axle length (`mechanical_axle`: 1-16)
 - `scale`: global scale percent (90-110)
 
diff --git a/llms-full.txt b/llms-full.txt
index 8c3f1c5..29dc34f 100644
--- a/llms-full.txt
+++ b/llms-full.txt
@@ -25,7 +25,7 @@ Query API (share links):
 - Mechanical Axle: `?template=mechanical_axle&l={L}&scale={SCALE}`
 
 Range constraints:
-- `classic_brick`: width 1..10, length 1..12, height 1..9, scale 90..110
+- `classic_brick`: width 1..10, length 1..12, height 1..24, scale 90..110
 - `classic_plate`: width 1..16, length 1..16, scale 90..110
 - `classic_tile`: width 1..16, length 1..16, scale 90..110
 - `mechanical_axle`: l 1..16, scale 90..110
diff --git a/llms.txt b/llms.txt
index 32d3e1d..faa732b 100644
--- a/llms.txt
+++ b/llms.txt
@@ -15,7 +15,7 @@ Canonical URL shapes:
 - https://openbrick.cogan.dev/?template=mechanical_axle&l={L}&scale={SCALE}
 
 Allowed ranges:
-- classic_brick: width 1..10, length 1..12, height 1..9, scale 90..110
+- classic_brick: width 1..10, length 1..12, height 1..24, scale 90..110
 - classic_plate: width 1..16, length 1..16, scale 90..110
 - classic_tile: width 1..16, length 1..16, scale 90..110
 - mechanical_axle: l 1..16, scale 90..110
diff --git a/scad/classic_brick.scad b/scad/classic_brick.scad
index 905bff0..a54a7e9 100644
--- a/scad/classic_brick.scad
+++ b/scad/classic_brick.scad
@@ -3,7 +3,7 @@
 // @description Classic interlocking brick with top studs and bottom cylindrical female sockets.
 // @param X|Width (studs)|1|10|1|4
 // @param Y|Length (studs)|1|12|1|2
-// @param Z|Height (plates)|1|9|1|3
+// @param Z|Height (plates)|1|24|1|3
 // @param scale_percent|Global Scale (%)|90|110|1|100
 //
 // Reference proportions:
diff --git a/tests/share-query.test.mjs b/tests/share-query.test.mjs
index 7af8674..59477b8 100644
--- a/tests/share-query.test.mjs
+++ b/tests/share-query.test.mjs
@@ -8,7 +8,7 @@ const CLASSIC_TEMPLATE = {
   params: [
     { key: "X", min: 1, max: 10, defaultValue: 4 },
     { key: "Y", min: 1, max: 12, defaultValue: 2 },
-    { key: "Z", min: 1, max: 9, defaultValue: 3 },
+    { key: "Z", min: 1, max: 24, defaultValue: 3 },
     { key: "scale_percent", min: 90, max: 110, defaultValue: 100 },
   ],
 };
@@ -96,14 +96,14 @@ test("parseShareQuery reads canonical query params", () => {
 });
 
 test("parseShareQuery supports aliases and clamps values", () => {
-  const parsed = parseShareQuery("?template=classic-brick&x=100&y=1&z=9&scale_percent=999", [CLASSIC_TEMPLATE]);
+  const parsed = parseShareQuery("?template=classic-brick&x=100&y=1&z=999&scale_percent=999", [CLASSIC_TEMPLATE]);
 
   assert.ok(parsed);
   assert.equal(parsed.templateId, "classic_brick");
   assert.deepEqual({ ...parsed.params }, {
     X: 10,
     Y: 1,
-    Z: 9,
+    Z: 24,
     scale_percent: 110,
   });
 });