HAMMOND CS18188 N1 Screw Cover 18 x 18 x 8 Steel/Gray electrical box

Electrical box dimensions

The HAMMOND CS18188 N1 is a steel enclosure measuring 18 by 18 by 8 units and finished in grey. It uses a screw cover to seal wiring junctions and protect connections from dust and moisture. The box suits industrial, commercial and residential installations that require a durable metal housing. Electricians and maintenance teams specify it for new conduit runs and panel upgrades.

Replaces worn or undersized enclosures

Installers choose this model when an existing box has corroded, been damaged or no longer meets code after a circuit extension. The screw cover allows repeated access without distorting a hinged lid, and the steel body resists impact better than non-metallic alternatives. The upgrade is worth it when the job demands a rigid, paintable surface that can be grounded directly. It is not for buyers who need a hinged door or a non-metallic body.

Capacity and headroom

The internal volume accommodates multiple cable entries, splices and terminal blocks for typical branch-circuit wiring. The 18 by 18 footprint provides generous working space for pulling conductors and making connections without crowding. Headroom is sufficient for standard device mounting and conduit hubs up to the knockouts provided. It runs out when the conductor fill exceeds the cubic-inch allowance for the wire sizes used.