diffusori da incasso a soffitto vpxt6rVisual Performance Extreme Sold in pairs The Sonance XPC Grille Retention Technology ensures the grille is held securely in place even during high pressure washing Engineered to handle extreme temperature and humidity areas from 30 F up to +175 F ( 34 C up to + 79 C) while still maintaining superior Sonance sound quality Powder coated marine grade stainless steel grille to avoid corrosion Conforms to Military Standard 810G for humidity, salt spray,