Toggle Cover provides the maximum protection, and can be easily added to an already installed switch by unscrewing and replacing the facenut. • Height closed 1.08" (27.4mm) • Height open 1.71" (43.5mm). 1.80" (45.8mm) long x .67" (17.0mm) wide • Mounting hole diameter .47" (11.9mm) • Accepts switches with standard 15/32" diameter mounting stems