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To: FJB who wrote (84755)1/10/2012 5:16:15 PM
From: HPilot  Respond to of 90947
 
Testing shows screw ins last almost as long, with a higher initial failure rate pulling down the average. If it doesn't fail right away, and your fixture allows good air circulation it could last 10 years as well. The buildings we put them in will not usually last that long because they will be on 8 to 12 hours a day 5 days a week.