POLK AUDIO AM0748-B ATRIUM45 INDOOR / OUTDOOR SPEAKER

The Polk Atrium45 features an all stainless steel and brass hardware for years of rustproof reliability, it meets or exceeds ASTM D5894-UV Salt Fog, Mil standard 810 Immersion and Mil standard 883 Method 1009 8 for salt and corrosion tests, it has a rustproof aluminum bracket allows multiple mounting options and full 90 degree rotation: aim them to deliver the best possible sound in a variety of locations and rustproof aluminum grille has 55% open area for superior sound quality. ... Read More