Triple-drive heady screws - Standard, Phillips, Robertson. NEMA configuration number and rating molded on face of device for easy identification. Deep-slotted, backed out terminal screws draw backwire clamps securely for maximum conductivity. Husk and module keyed for easy alignment during wiring. Built-in cord grip adjusts automatically for use with No. 18-3 through No. 12-3 cords.
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