Arlington FS420SCL 20 Cubic-inches Fan/Fixture Box for Suspended Ceilings, Metallic, 1-Pack - Ceiling Fan Accessories - Amazon.com
BELL PVC Weatherproof New Work/Old Work Round Electrical Box in the Electrical Boxes department at Lowes.com
4 Packs 5 Inch Ceiling Cover Plate Metal Flat Round Electrical Cover Blank Circle Wall Plate with Screws Ceiling Fan Switch Cap Cover, Holes Are Spaced 2.75 Inch, White (For 3-1/2 inch