In the proven line of Gulper waste pumps, the Gulper Grouper Mark III boasts 90 port orientation for direct replacement of existing macerator pumps in compact areas. Unlike macerator pumps, non-choke Gulper valve technology means no filters, and no clogged impellers with associated motor burn out—just reliable waste management. The pump is equally dependable for bait box evacuation or for pumping toilet waste. It is easy to clean and maintain, and with 360 head rotation, lining up hose connections is a cinch. Key Features Self-priming pump High-quality, marine grade materials Port size for inlet is 1 1/2" and outlet is 1" Non-choke valves Efficient operation runs dry without damage Ideal for 25ft+ fishing boats Quiet operation Lightweight design No impeller to clog or burn out for less maintenance Uses less power