comviee replacement fan kit compatible with masterbuilt gravity series 560/800/1050 digital charcoal grill + smoker, replace part accessories 9904190040 for masterbuilt mb20041020, mb20040221, mb20041220 mb-fan kit is up for auction in Patio, Lawn & Garden. The current bid is $1.00, 95% below the $18.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.