Tower Manufacturing’s Model No. 3401500 is a 120V, 20A rated panel-mount GFCI that can be installed in enclosed control boxes, industrial electrical panels of bulkheads, temporary power (spider) boxes and with pumping controls for spas and pools. It’s a UL-recognized components, Class “A” GFCI for people protrection with a nominal 4-6mA trip level. Line and load side stranded leads are 12AWG. Product dimensions are 1.85-inches (length) by 2.50-inches (width) by 3.37-inches(height). Tower Manufacturing