Designed and built to withstand the rigors of even the harshest of outdoor environments, Russound's Outback outdoor speakers will provide years of trouble-free service. They work in a wide range of temperatures and be unaffected by extremes of humidity.   A corrosion-resistant aluminum grille and bracket coupled with the speaker’s rugged environmental design assures durability in any kind of weather. Sealed enclosures offers greater durability against any extreme from fierce downpours to blistering sun and everything in between.