I did not find any info here with a search, so just a safety heads up. If you bought 18"-48" fluorescent fixtures made for Cooper Lighting in the last five years, there's a safety recall for fire danger. Go to CPSC and / or use search engine to find Cooper Lighting Recall. I have seven of the two-bulb "shop lights" that were included. They offer free replacement fixtures. Make mulch not smoke with your sawdust!