Green CFL Compact Fluorescent Light 4 pack of 13 watt green CFL bulbs that don't disturb plants when in their night cycle by SunBlaster Grow Lights SunBlaster's 4 Pack of 13 Watt Green Output Compact Fluorescent Lights (CFL's) feature high output self-ballasted, flickerless lamps with low energy consumption that won't wake up your plants during their night cycle. Sun Blaster all purpose Green Light bulbs are for designed for residential or commercial horticultural use allowing growers to work, check on, spray, etc. their plants during the night cycle without interrupting photosynthesis. SunBlaster Green compact fluorescent light bulbs output at a very bright 1,100 lumens which is perfect for working on all projects. Sun Blaster Green CFL bulbs are excellent for indoor or outdoor greenhouse applications at night or when white light can be detrimental to a plant's photosynthesis cycle. Sun Blaster 13 watt green compact fluorescent bulbs fit into a variety of light fixtures such as trouble lights, table lamps, wall sconces and track lights. Sunblaster green light bulbs are cost effective, easily replacing your high wattage, short lived white incandescent bulbs. Sun Blaster green CFL's produce an 1,100 lumen output with a 10,000 hour life bulb which is the equivalent of a 60 watt incandescent bulb, yet draws only 220mA or 13 watts. Dimensions are 4.4 x 2 inches, easily screwing into any standard light socket or trouble light for portable use throughout your garden.