Standard and water-tight boxes for all electrical installation purposes (1908)
H. Krantz Manufacturing Co. · leaf 11
nduit.Finished. /ivtjr /ir^e … Outside Dimensions. Width over Lugs, -V4Diameter of box, 4t to Miit conditions This box is mad ■ I and in par-lapted i<>r usein concrete * eilings andfloors. • box setin < oncrete ceiling (below floor level) and extend-ing thi i ling level below. tiown is ■with rubber bushing for dro]…
