The Tower Manufacturing 30338018 GFCI Cord. This Portable GFCI power adapter provides protection for areas where water may be encountered. Plug the NEMA 5-15 plug into a conventional home receptacle and the (3) female ends are now protected. The inline design enables the plug to enter space restricted receptacles. This automatic set GFCI is ideal for equipment intended for continuous use where a temporary power failure is likely and undesirable. Sold each.
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See TnA Safety, Webster, NY on MacRae's Blue Book