52171-K 4" Square Steel Box — 2-1/8" Deep, Concentric Knockouts

52171-K 4" square junction box, 2-1/8" deep, for a total capacity of 30.3 cubic inches.

• Size: 4" x 4" x 2-1/8"
• 1/2" and 3/4" concentric knockouts
• Raised earth grounding