Legrand 250W, 250V White Pull Chain Ceiling Light Socket with Grounding Outlet 313033888843 | eBay
Remote Control Light Bulb Fixture Socket with Timer, PBT Plastic Ceiling Lamp Holder with 2 Grounded Outlet, 125V 660W Light Fixture with Outlet for Garage, Basement, Mount on 3-1/4'' or 4'' Box
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Eaton Porcelain Keyless Ceiling Socket, White in the Light Sockets department at Lowes.com
LNGOOR 2Pcs E27 Light Bulb Socket Adapter Splitter to 3 Heads White Finish with Fully Adjustable Angles for Wide Coverage, Indoor and Outdoor Use for Ceiling Light or Lamp - Walmart.com