Full Technical Description: Male Threaded, Tapered Female Threaded Type; Zinc Electroplated Malleable Iron Material; 3.4 Inch L Size; Imc/Rigid Conduit Used on; UL 514B, CUL, CSA C22.2 Approval; Locknut Grounding Screw; 4 Inch Trade Size; Raintight; Insulated Throat Type; Applicable Standard NEMA FB-1; Application Wet Location Food Processing Plants, Distilleries Breweries, Sewage Disposal Plants, Chemical Plants, Paper Processing Mills and Refineries; Enclosure Type Class I Div 2, Class II Div 1 and 2, Class III Div 1 and 2; Width Across Flat 5.47 Inch; Width Across Corner 6.24 Inch; MHUB Model