The NEXUS UL Contractor Series 6.5" 70V Commercial Metal Back-Can Speaker from Speco Technologies features heavy-duty industrial metal back cans for added component protection and safety, while also enhancing the speakers' full-range bass sound. The "Quick-Snap" connection terminals make it easy to access and connect speaker wire at optimal angles, while the wattage selector dial simplifies transformer settings. This speaker meets strict UL1480 and UL2043 requirements and is compliant with NDAA Section 889 Part B guidelines for added peace of mind.