54151-cfnb Galvanized Steel Ceiling Fan Junction Box – 4" Wide, 5 Knockouts, Heavy‑duty Support

Introducing the Southwire 54151-CFNB Galvanized Steel Ceiling Fan Junction Box, a compact 4‑inch wide mounting solution engineered for demanding ceiling‑fan and heavy‑duty lighting installations. Crafted from corrosion‑resistant galvanized steel, this box measures 1½ inches deep and 4 inches high, delivering a sturdy anchor point while maintaining a low‑profile silhouette. Five precisely placed knockouts—including side and bottom options—provide flexible wiring pathways for a clean, professional finish.

Why it matters: The reinforced construction ensures the box can safely bear the torque of large fans, reducing vibration and extending the lifespan of both the fixture and the electrical connections. Its universal head‑screw design simplifies mounting to joists or framing members, while the raised grounding tab guarantees a reliable earth path for safety compliance.

• Galvanized steel body: Offers superior rust protection for long‑term durability in any environment.
• Four‑inch width, 1½‑inch depth: Compact footprint fits tight ceiling cavities without sacrificing strength.
• Five knockouts: Includes side and bottom openings for versatile cable routing and easy installation.
• Combination head screw: Streamlines attachment to structural framing, saving time for electricians.
• Raised grounding tab: Provides a secure ground connection, meeting NEC safety standards.

Secure your next ceiling fan with confidence: The Southwire 54151-CFNB box combines rugged materials, thoughtful engineering, and user‑friendly features to deliver a dependable mounting platform. Whether you’re upgrading a residential fan or installing a commercial lighting fixture, this junction box ensures a stable, code‑compliant foundation that professionals trust.