Figure 1. Knock-Out Dimension Diagram 2 (Models: 2056, 4031, and 4038) Model Dimensions mm (in) D D1 D2 D3 W W1 φd4 φd5 2056 4031, 4038 67.5 (2.66) 86.5 (3.41) 60 (2.36) 34 (1.34) 54 (2.13) 46.5 (1.83) 35 (1.38) 44 (1.73)