The Kosnic 12W LED 4 Pin DD Bulb is a retrofit replacement for a 28W CFL equivalent, using almost 50% less energy and, with a 30,000-hour lifespan, lasting 3 times longer. It includes a built-in green LED and socket for optional plug-in use with a separately available emergency lighting conversion pack.
Installation Videos
If you are looking to replace an electronic ballast or a choke-style ballast with starter, we have 2 installation videos to guide you step by step.
To replace an electronic ballast watch the following video:
To replace a choke-style ballast with starter watch the following video
Certified with an A+ energy rating, the Kosnic 12W LED 4 Pin DD Bulb emits 1200 lumens of 2700K warm white light in a 120° flood beam. This equates to an excellent luminous efficacy of 100 lumens per watt and a peak luminous intensity of 350 candelas.
Other advantages of the Kosnic 12W LED 4 Pin DD Bulb over fluorescent equivalents include instant full-power start, high tolerance of frequent switching, negligible UV or IR output (less likely to attract insects or cause fading), no mercury content, reliable low-temperature performance (down to -20°C), shock-proof and vibration-proof.
To achieve maximum energy savings with the Kosnic 12W LED 4 Pin DD Bulb, the control gear of the fitting should be bypassed during installation for direct supply from the mains. This retrofit bulb is non-dimmable.
3 Year Guarantee 
Energy Rating: A+