Standard and water-tight boxes for all electrical installation purposes (1908)
H. Krantz Manufacturing Co. · leaf 15
Fig. 2.309 Box with S. Cover. 3 V indiameter. IX i11 depth. Section of 309 Box with F. Cover. This \ suitable for expi >sed m It is tapped to r< end ^^*fl of the conduit. ■which are shown on opposil Le many pur- … 309 Box u ithoul < over. DIAGRAM OF OUTLETS.
