diff --git a/Package.swift b/Package.swift
index 63eaedc..1e497e0 100644
--- a/Package.swift
+++ b/Package.swift
@@ -14,6 +14,7 @@ let package = Package(
     .library(name: "CalculateAtFeature", targets: ["CalculateAtFeature"]),
     .library(name: "EstimatedPressureDependency", targets: ["EstimatedPressureDependency"]),
     .library(name: "SharedModels", targets: ["SharedModels"]),
+    .library(name: "StaticPressureFeature", targets: ["StaticPressureFeature"]),
   ],
   dependencies: [
     .package(
@@ -62,5 +63,13 @@ let package = Package(
         "SharedModels"
       ]
     ),
+    .target(
+      name: "StaticPressureFeature",
+      dependencies: [
+        "SharedModels",
+        "Styleguide",
+        .product(name: "ComposableArchitecture", package: "swift-composable-architecture"),
+      ]
+    ),
   ]
 )
diff --git a/Sources/SharedModels/EquipmentMeasurement.swift b/Sources/SharedModels/EquipmentMeasurement.swift
index c18e60e..381e78c 100644
--- a/Sources/SharedModels/EquipmentMeasurement.swift
+++ b/Sources/SharedModels/EquipmentMeasurement.swift
@@ -25,6 +25,7 @@ public enum EquipmentMeasurement: Equatable {
   
   public struct AirHandler: Equatable {
 
+    @Positive
     public var airflow: Double?
 
     @Positive
@@ -60,6 +61,7 @@ public enum EquipmentMeasurement: Equatable {
   
   public struct FurnaceAndCoil: Equatable {
 
+    @Positive
     public var airflow: Double?
 
     @Positive
diff --git a/Sources/StaticPressureFeature/StaticPressureView.swift b/Sources/StaticPressureFeature/StaticPressureView.swift
new file mode 100644
index 0000000..fecc4ab
--- /dev/null
+++ b/Sources/StaticPressureFeature/StaticPressureView.swift
@@ -0,0 +1 @@
+import Foundation