Topaz's Weatherproof Double Gang 5-Hole Boxes are designed to use for wall or pole mounting of outdoor outlets, switches and floodlights. Fabricated strategically from strong, durable and lightweight copper-free aluminum. Provides a 40 cu. in. capacity for easy accessibility and use. Precision manufactured for optimum performance and longevity, this product features a premium powder coat finish that ensures integrity for the long term. The box includes closure plugs, grounding screws and mounting lugs. Additionally, its threaded hubs are a 3/4 in. of an inch to fit your specific needs. Both cultus Listed, UL Listed and both 2011 NEC and NEMA 3R compliant for safe use in a variety of environments.