A Housing Association courtyard is lit by 4 GEC Z5670 lanterns on 5m columns. The lanterns still retain their glass refractor rings, and are generally in great condition due to regular maintenance. The lamps are PL compact fluorescent type, but they were probably just tungsten lamps before. Because Mercury lamps are not used, the bowls have not yellowed anything like other such installations.
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Plymouth City Private Installations
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