Marinco 4" Day/Night Solar Vent - Stainless Steel N20804S is a high-quality product designed for winterizing and heaters/dehumidifiers. It is a winterizing product that helps in maintaining the functionality of boats during harsh weather conditions. The product is made of durable stainless steel and has a maximum resolution of missing value. The product has a line type of winterizing and heaters/dehumidifiers and a bait type of winterizing and heaters/dehumidifiers. It has a length of missing value and a width of missing value. The product is compatible with missing value and has a memory card(s) supported of missing value. It comes with a manufacturer warranty/rebates of yes.