Thomas & Betts 5239 Liquid Tight Connector. T&B® Liquidtight Conduit Connector Non-Insulated Straight Series: 52 Series 3 in Trade For Use With: Liquidtight Flexible Metal Conduit Steel Electro-Plated Zinc/Chromate Coated 4-1/4 in L x 4-1/2 in W Dimensions. Additional Description: TB -5239 (T) 3 INCH NON-INSUL LIQ-TIGHT CONN ST. Catalog Description: Liquidtight Conduit Fitting Straight 3 Inch Non-Insulated Malleable Iron.