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24" Whistle-Free Flex Line in Black, stainless steel, for use indoors/outdoors, staggered pitch every 2 inches to eliminate the nuisance of whistling found during normal installs; un-bagged, 1/2" OD -3/8" ID, 1/2" female pipe threads on one end and 3/8" male pipe threads on the other.
85,000 BTU Capacity
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