Vent with Stainless Steel Flap Specifications: Product Material: Nylon Packing List: Vent Flap*1 Screw Remarks: Due to lighting effects and shooting angles, the color of the item and what is shown in the picture may have nuance. Due to manual measurement, there may be a tolerance in the size of the product. Delivery quantity: 4 pieces (with accessories) Product color: white Product size: 63*58*21mm Note: manual measurement, please allow 1-3cm error The high-strength cover is UV and weather resistant. The wire cover is used to seal and splash-proof openings of wires, hoses. Perfect for transducer wire cover, cable cover, you can cover the hose hole, you can also use their external vent for compost toilet. Used to cover the transom cable hole in the transducer or cover the holes in the nose of the fish box. Prevents water from pouring in if you're in choppy water, even if it probably wouldn't go very far down the drain, but putting them on ensures that. Multifunctional: This marine vent cover can be used for splash-proof vents or external vents for wiring cables, wires and hoses. Premium material: it is made of nylon. This vent has excellent seawater corrosion resistance and durability. Light material: Nylon's strength and service life are exactly the same as 316 stainless steel. Therefore, using nylon material for our marine vents is a lighter and less expensive solution. Flat Head Bolts: The edges of our vent covers are smooth and thick. Because grub screws cover a large area and are smooth to the touch.