Philips Cool White bulbs are designed for general purpose lighting needs and great for the garage, workshop or basement. The Philips 56-Watt Linear Fluorescent Light Bulbs (F72T12/CW) feature a light output of 4,450-Lumens. It uses use 56-Watt and last up to 20,000 life hours. These fluorescent light bulbs provide a cool white light and are ideal for use in bathrooms or laundry rooms. For general use including indoor commercial and residential use and ideal for home or office for versatility.