4SQ BOX STANDARD

🧾 What it is:

A metal electrical box measuring approximately:

• 4" × 4" square
• Standard depth (commonly 1-1/2" deep unless otherwise specified)

🔧 What it’s used for:

Common in commercial and residential electrical work for:

• Wire splicing and junctions
• Mounting switches or receptacles (with mud ring/plaster ring)
• Conduit terminations (EMT, MC, flex)
• Lighting fixture connections
• Ceiling or wall junction points

⚙️ Key features:

• Galvanized steel construction
• Multiple knockouts for conduit connectors
• Supports higher wire fill capacity than smaller boxes
• Accepts:
  • Mud rings
  • Blank covers
  • Device covers
• Common in exposed conduit systems

🧠 Simple explanation:

It’s basically a metal electrical box used as a central connection point where wires come together and devices or conduit can be attached safely.