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Polk Atrium 5 - Pair Weatherproof Outdoor Speakers Experience premium, high-fidelity sound outdoors with the Polk Atrium 5 weatherproof speakers. Designed to withstand harsh weather conditions, these speakers deliver powerful audio performance with easy installation and durable construction. Key Features 5-inch (12.7cm) long-throw mineral-filled polypropylene cone driver with butyl rubber surround for deep bass response 3/4-inch (19mm) anodized aluminium dome tweeter with rubber surround and neodymium magnet for smooth, high-frequency sound Broad coverage baffle design with steeply-angled baffle for wide mid- and high-frequency dispersion Polk all-weather certified exceeding ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, and Mil-Std 883 Method 1009.8 for salt and corrosion resistance Durable mineral-filled polypropylene cabinet with molded-in bracing for lasting performance Patented Dynamic Balance® and Klippel optimisation technologies for realistic sound reproduction at all volumes Rust-free aluminium grilles and bracket with stainless steel and brass hardware Gold-plated 5-way binding posts for secure and dependable connections Available in weatherproof black or white paintable finishes One-handed Speed-Lock™ mounting system with 45° angled mount capability for easy installation Specifications Driver Size: 5-inch (12.7cm) long-throw mineral-filled polypropylene cone Tweeter Size: 3/4-inch (19mm) anodized aluminium dome Mounting: Speed-Lock™ system with 45° angled mount Materials: Mineral-filled polypropylene cabinet, aluminium grilles and bracket, stainless steel and brass hardware Certifications: ASTM D5894-UV Salt Fog, Mil Standard 810 Immersion, Mil-Std 883 Method 1009.8 What's in the Box Pair of Polk Atrium 5 outdoor speakers Speed-Lock™ mounting brackets > Installation hardware Polk Audio uses advanced manufacturing techniques and rigorous quality testing including drop tests, extreme signal response, UV and salt exposure to ensure your Atrium 5 speakers deliver exceptional performance and durability for a lifetime.