diff --git a/src/constants.ts b/src/constants.ts
new file mode 100644
index 0000000..558c1db
--- /dev/null
+++ b/src/constants.ts
@@ -0,0 +1,22 @@
+import { IGridLayout } from './state/interfaces/controls';
+
+/**
+ * Offers constant information values to use in an application.
+ */
+export module InteractiveConstants {
+    export const gridLayoutSizes: IGridLayout[] = <IGridLayout[]> Object.freeze([
+        {
+            size: 'large',
+            width: 80,
+            height: 20,
+        }, {
+            size: 'medium',
+            width: 45,
+            height: 25,
+        }, {
+            size: 'small',
+            width: 30,
+            height: 40,
+        },
+    ]);
+}
diff --git a/src/index.ts b/src/index.ts
index 78d796f..e5ba2d0 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -5,8 +5,9 @@ export * from './state/Group';
 export * from './IClient';
 export * from './GameClient';
 export * from './ParticipantClient';
-export * from './util';
+export * from './constants';
 export * from './errors';
+export * from './util';
 
 /**
  * This allows you to specify which WebSocket implementation your
diff --git a/src/state/interfaces/controls/IControl.ts b/src/state/interfaces/controls/IControl.ts
index b1b9b7d..061f94e 100644
--- a/src/state/interfaces/controls/IControl.ts
+++ b/src/state/interfaces/controls/IControl.ts
@@ -8,6 +8,12 @@ import { IMeta } from './IMeta';
 export type ControlKind = 'button' | 'joystick';
 export type GridSize = 'large' | 'medium' | 'small';
 
+export interface IGridLayout {
+    readonly size: GridSize;
+    readonly width: number;
+    readonly height: number;
+}
+
 /**
  * Represents the raw data a control has when transmitted
  * and received over a socket connection.