Primarily for installations where cabin sides are inclined at angles greater than 15° from vertical and ports collect rain and spray. These ports have 2" spigots. When trimmed flush with spigots cut to 5/8" (for up to 1/2" cabin walls), they drain even when tipped at angles up to 45°. Constructed of strong, white ABS plastic with clear or smoked Lexan windows. Trim rings and screens are included. Feature Beckson’s patented cam latches. Use only 100% silicone caulk for installation.