Once you have these 2 overall measurements refer to the below table showing the overall cover dimensions for each size of cover offered and match up to arrive at the best fit for your boat

Nylon and stainless steel combined

Third Engineer

Nylon and stainless steel construction

the Harken Carbo OneTouch is built to be strong but lightweight

Jabsco Service Kit For Y Valve pad eye Once you have these 2Heavy duty corrosion and chemical resistant polypropylene with stainless hardware. For use with bilge pumps or toilet systems. Can be padlocked. Ports can be rotated 90 degrees for ease of installation to allow hose to run in any direction. 3 sturdy mounting feet. Easy access to valve for servicing. Can be operated through bulkhead using optional handle extension kit. Supplied with 40mm (1 1 2") ports fitted with 1 x additional 25mm (1") straight port.