M2 Marine Grade
Rockford’s M2 marine grade standard takes into account the devastating effects of the outdoor environment and takes extreme measures to ensure optimum performance.
100% UV stable CENTREX® injection molded plastic
Corrosion resistant gold plated polarized terminals
Injection molded polypropylene cone with UV inhibitors
Internal full magnetic shielding
Stainless steel grilles and mounting hardware
UV and salt fog resistant thermo-plastic elastomer surround
ASTM B117 – Salt/Fog & D439 – UV Test Standards
ASTM B117 salt/fog test standard provides accelerated aging in a controlled corrosive environment to produce relative corrosion resistance information for specimens of metals and coated metals.
ASTM D4329 test standard is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat.