Rain Drain opening ports are designed primarily for installation where cabin sides have excessive angles and other ports would collect rain and spray. Rain drain ports can be mounted on vertical surfaces with no more than 45 from center. The port, cut at 5/8", will drain while tipped up to 45 degrees. Unlike others, Beckson Rain Drain Ports have open drains which resist clogging and are easy to clean. The spigot is the integral part of the frame which passes through the cabin wall.