... environment Indoor use (applicable for dry environment) Protection rating IP44Life-span 50,000hrsWeight 5,600g (lamp), 6,000g (total)Certification ... : 30,000-50,000 hrs16 Strict quality control, lighting aging for 72 hrs and complete inspection before shipping17 Solid-state, ... install, low maintenance cost. Cut cost by reducing re-lamp frequency, especially in difficult to reach area that requires ...