Rule 98B24 Shower Drain Box, 800 GPH, 24V GENERATION 2 Features a revolutionary tapered shank

Features a revolutionary tapered shank design

and it has an internal check valve

Mercury-Mercruiser 881145 KNOB

Tinned copper for corrosion resistance and greatest electrical conductivity

Mercury-Mercruiser 8613281 SM MC V6 98-UP

Rule 98B24 Shower Drain Box, 800 GPH, 24V GENERATION 2 Features a revolutionary tapered shankThe shower drain box includes a polycarbonate snap lid cover, gasketed cover, several mounting options, cut guides and drill points, friction fit pump and switch, threaded port fittings, easy clean strainer, and a larger joker valve. Several combinations of port fittings are included such as 3 4", 1", 1 1 8", straight and 90A elbow fittings.