Experience high-fidelity sound quality anywhere you want with these Polk Atrium4 outdoor loudspeakers. Their compact size makes them ideal for covert installations so sound can come from an unseen location. Ruggedly built, these all-weather certified speakers will deliver big, full-range sound for many years, any time of year. Installation is a cinch with the Speed-Lock mounting system. Once the bracket is mounted, the speaker just clicks into place. Featuring aluminum grilles and brackets, and stainless steel and brass hardware, these will never rust. The white exterior can even be painted. They are an excellent choice for indoor or outdoor use.