diff --git a/backend/documents_parser/tests/test_elmhurst_end_to_end.py b/backend/documents_parser/tests/test_elmhurst_end_to_end.py
index c434e833..53c81164 100644
--- a/backend/documents_parser/tests/test_elmhurst_end_to_end.py
+++ b/backend/documents_parser/tests/test_elmhurst_end_to_end.py
@@ -201,6 +201,21 @@ class TestWindows:
     def test_third_window_orientation(self, result: EpcPropertyData) -> None:
         assert result.sap_windows[2].orientation == "South"
 
+    def test_frame_factor(self, result: EpcPropertyData) -> None:
+        assert result.sap_windows[0].frame_factor == 0.7
+
+    def test_transmission_u_value(self, result: EpcPropertyData) -> None:
+        assert result.sap_windows[0].window_transmission_details is not None
+        assert result.sap_windows[0].window_transmission_details.u_value == 1.4
+
+    def test_transmission_solar_transmittance(self, result: EpcPropertyData) -> None:
+        assert result.sap_windows[0].window_transmission_details is not None
+        assert result.sap_windows[0].window_transmission_details.solar_transmittance == 0.72
+
+    def test_transmission_data_source(self, result: EpcPropertyData) -> None:
+        assert result.sap_windows[0].window_transmission_details is not None
+        assert result.sap_windows[0].window_transmission_details.data_source == "Manufacturer"
+
 
 class TestHeating:
     def test_single_heating_detail(self, result: EpcPropertyData) -> None: