/ScoopCloud/ -- EZ Concept is proud to announce that their EzyJamb Single Rabbet (SRC) door jamb received a fire rating of 90 after passing rigorous testing by Intertek, an independent testing and certification agency known all over the world. According to the Steel Door Institute, this means that the EzyJamb Single Rabbet door jamb has been approved to withstand fire for 90 minutes which slows the spread of fire throughout a building.