Immersion Well Bulb Length 3 in Connection Material Copper External Thread Size 1/2 in Inside Diameter 0.375 in Maximum Insertion Length 1 1/2 in Shank Length 1 1/2 in Shank Material Copper Mounting Flange Application Whole Home Water Solutions Compatible Brand and Series L4006 L6006 Insulation Depth 1 1/2 in Overall Length 3 in