\r\nCLPB41 36 Watts 4ft T8 High-Frequency Fluorescent Batten Fitting\r\n- 36-watt T8 high-frequency batten fitting.- Complete with comprehensive fittings instructions and fitted with HF electronic ballasts. - The high-frequency technology used in this fitting is known to be up to 10% more energy efficient than a standard fluorescent fitting and features none of the irritating hums or flickering found in older models.- The high-frequency fluorescent fitting also requires no warm-up time, giving you full output light in seconds instead of minutes.