Venturi vents feature a contemporary horizontal louver design that adds a clean look to any boat. These patented vents are sized for easy installation, even on highly-contoured decks. ABS plastic construction will not corrode or discolor. At time of installation, black (1494A) or white (1494F) vent can be painted to match boat gelcoat. Paint must be suitable for ABS plastic. Above-deck dimensions: 2-3/4" wide X 17-9/16" long X 11/16" high.