Eaton Corp Crouse-Hinds series s Division has assembled one of the most complete outlet box product lines in the business. We've been leading in quality and selection for decades and throughout the steel outlet box offering, you will find innovative products and solutions that save labor, cut material costs and increase productivity. Our 4-11/16" steel square outlet boxes, covers and extension rings are for use in commercial and industrial conduit applications, where larger sized conductor or wiring devices are needed and additional volume is required. The boxes are also available in red for fire alarm applications.