Hello, over the last 6 months I have had three SYLVANIA 40 W 120V. FAN DL 350 LUMENS not last longer than 20 hours of service, I purchased all at Home Depot the first one lasted only 1 week above my stove, I really don't cook that much the other two lasted each about 3 months with 15 - 20 hours use, is this normal? if so I will look for a different manufacturer. Thank you, Tim Beffrey User's recommendation: DO NOT BUY.