Our 4" low profile cowl vents with deck plate offer a sleek, modern appearance while providing practical functionality as a low-sitting vent on your boat deck. This design reduces the likelihood of catching lines on your deck, enhancing safety and convenience. Popularly used on the transom of many boats, this precision-casted vent is crafted from durable 316L stainless steel with a mirror-polished finish, ensuring both durability and aesthetic appeal. The interior boasts a robust white powder-coated finish that can be customized to any color of your choice. Additionally, the vent includes a heavy-duty 6-hole deck plate and cap, featuring a star-pattern key that matches the size of a traditional winch handle (11/16"). The deck plate, with 12 threads per inch, is an exact size match to the Nirco deck plate from the past. Size 4" Deck Plate Cut-Out 4-3/8 " Deck Plate Overall Width 5-5/8" Opening Dimensions 7-1/2" x 3-5/8" Vent Height 5-3/8" Weight 5 lbs