Master Lock® Wall Switch Lockout, Universal, 1 Padlocks Maximum, 5/16 in Padlock Shackle Maximum Diameter, Red, For Use With: Toggle and Decora Paddle Wall Switch, Locked Out Do Not Remove Legend, Polycarbonate Glass, 4-3/4 in H x 1-3/4 in W x 1 in D Dimensions. Master Lock® 496B Universal Wall Switch Lockout, 5/16 in Max dia Padlock Shackle, 1 Padlocks, Polycarbonate Glass, Red