Features: This heavy duty inch eight-sided electrical box boasts superior durability with its galvanized steel construction, featuring multiple knockouts for easy customization and stable performances even in harsh environments, making it an essential electrical box for any project. Measuring inches and 1 0.5 inches with a 15.5 cubic inch capacity, it includes (2) 0.5 inch and (2) 3/4 inch side knockouts, with (2) 0.5 inch and (2) 3/4 inch bottom knockouts, designed for versatile junction box applications. Ideal for enthusiasts, professional electricians, and renovation experts seeking a dependable metal junction box solution for efficient electrical installations. Perfect for residential upgrades, commercial building site , and renovation projects where a robust electrical box ensures stable performances in demanding scenarios. The innovative knockouts simplify wiring adjustments, saving time and effort while providing a secure and adaptable fundament for various electrical setups. Specifications: Component : steel Size: about 10.16x10.16cm/4x4inch Package Includes: 1xOctagonal Bottom Box note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.