This CFL light will fit easily and could be straightforwardly retrofitted into your current knob attachment. The CFL Technology has many benefits like upto half energy saving over bulbs. This light will last atleast four times longer than bulbs. It is mercury and lead free lamp and is a cool light without UV radiation. The light will also help reduce maintenance and this will reduce relamping recurrence. This CFL is perfect for placing wherever you place a bulb for ambient light. For any product related issues contact Crompton toll free number 1800 419 0505 FREE. More details on http://www.crompton.co.in/support/"