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400W thorn METAL HALIDE lamp
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here is my 400W thorn METAL HALIDE lamp I got from James. it is an erly one from the 1970s. this lamp does have the bimatalic strip that thorn invented witch shorts out the stating electrode to the mane on next to it to stop electrololesis of the qurots arc tube incrising the lamp life. the arc tube is esentuly the same ones from 400W 1970s silvner superarc lamps.
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