Fixture Support Box, Round, 3-1/2 Diameter, Non-Metallic, Polycarbonate

Fixture Support Box, Round, 3-1/2 Inch Diameter, Non-Metallic, Polycarbonate, Black, For Use With Nonmetallic Sheathed Cable

Electrical Boxes - Farr's Hardware

CARLON B620L-UPC 4/0 20 CU IN CEIL BOX W/L BRACK

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Electrical Boxes - Frank Burton and Sons 856-455-1202

World Electric Supply

Cantex EZ Box New Work 8 cu in Round Polycarbonate Ceiling Fan Pan Black - Ace Hardware

Cooper Electric

Round Ceiling/Fixture Nail-On Outlet Box, Volume 16 Inches, Diameter 3-1/2 Inches, Depth 2-1/4 Inches, Color Black, Material Polycarbonate, Mounting

Carlon 3R-16-N 3-1/2 Inch Diameter 16 In³ Non-Metallic Ceiling Box with Clamp

Capital Electric Supply

Carlon Ceiling Fixture Draft Tight Electrical Outlet Box

Allied Moulded 9335-BHK :: 3.5 Dia. Round Fixture Support Box :: PLATT ELECTRIC SUPPLY

3-1/2 Diameter, Old Work Ceiling/Fixture Box with Speed Clamps, Thermoset Fiberglass, Depth: 2. Cubic Inches: 14.0. Fixture Weight: 15 lbs.

Fixture Support Box, Round 3-1/2

Allied Moulded H9338=ESGK 3-1/2-Inch Diameter Round Fiberglass Box - Electrical Boxes

Viking Electric