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Southwire 1-Gang Gray Polycarbonate New Work/Old Work Standard Adjustable Ceiling Electrical Box in the Electrical Boxes department at Lowes.com
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electrical - Mounting ceiling light to junction box with 1 white (running with no ends) and yellow wires only - Home Improvement Stack Exchange
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electrical - How should I connect my light fixture in this ceiling box? - Home Improvement Stack Exchange
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Amazon.com: Carlon B618R-UPC 4-1/4" Round Box, Old Work, Cubic Inches: 18", Non-Metallic : Tools & Home Improvement
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Hubbell Wiring 296-1 Raco Round Ceiling Fan Support Box with 1/2" Side and Bottom Knockouts, 1-1/2" Deep, 4" Round - Amazon.com
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