Nuvola fresh water inlet. Recess bore 90x70mm. Recess 93/147mm. When using dock water, this inlet reduces pressure to 3 bars to prevent damage to the piping system. The snap-in hose connector has a gardening-type coupling (see code N72445313001). 3/4" male outlet thread. UV-resistant ASA box with AISI316 stainless steel insert.