The Osram Four Pin Plug In Lamp is the best in terms of performance and light quality. Made using high-quality material, it is long-lasting and durable. This plug in lamp is apt for your office, public buildings, and home interior, making it extremely versatile. Offering a long service life and producing excellent luminous flux, it is incredibly unique and handy. Easy to install, it is designed to be used in combination with a conventional ballast. This lamp also provides higher efficiency, and it is energy saving.