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.
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100% UV stable CENTREX® injection molded plastic
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Corrosion resistant gold plated polarized terminals
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Injection molded polypropylene cone with UV inhibitors
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Internal full magnetic shielding
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Stainless steel grilles and mounting hardware
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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.