Inches 30 minimum 24 minimum 50.0 ± 1/16 24 28 1/2 1/16 ± ... Centimeters 76.2 minimum 61.0 minimum 127.0 61.0 72.4 ... A B C D E F G H ... Notes: 1. 1 1/4" Dia. Conduit Access Hole. 2. 5/8" ... Important: Because of continuing product improvements, ...