Easy to stall,convenience to use. color：black，white.
eBay
4 X 10'' Magnetic Floor Register Vent Covers, Stronger Magnet Vent Mesh,PVC Vent Screen Trap Perfect for Ceiling, Air Vent
Aliexpress UK
Nuova Rade vent grille 82mm. Overall: 82mm x 82mm. The grille is designed to sit over a 60mm round hole. This grille is used by boat builders including Quicksilver, Beneteau, Jeanneau etc.
eBay
Professional Universal Boat Cover Kayak Canoe Boat Waterproof UV Resistant Dust Storage Cover Shield Cover for Inflatable Boat
Aliexpress UK
High efficiency ventilation: the louver design of the product significantly increases airflow, ensuring effective ventilation and resolving stuffiness in cabins or rvs. Our exhaust fan outlet is designed for marine and RV applications, providing efficient ventilation for boats, trailers, and campers.
eBay
4 Types White Air Vent Extract Valve Grille Air Circulation Vents Cover 100/150mm Round Ducting Ventilation Cover Various Shapes
Aliexpress UK
Large clam shell ventilator. 2 Pieces Ventilator. Used to seal and splash-proof openings for wire, hose. Also perfect for locker vents. Made from marine grade 316 stainless steel. Due to light and screen difference, the item's color may be slightly different from the pictures.
eBay
Carbon Side Air Conditioning Vent Cover Trim for 3 Series F30 13‑18 Air Vent Cover Trim Air Outlet Cover Trim
Aliexpress UK
UFO Ventilator Cover - 304 stainless steel cover.Only Cover without motor & other compents. Weight: 300g.
eBay
Black 210D 11-22Ft for Yacht Boat Cover Winter Snow Cover Waterproof Sunshade Heavy Duty Trailer Marine Cover V-hull Boat Cover
Aliexpress UK
Nuova Rade ventilation grille. Overall: 92mm x 92mm. This ventilation grille is used to cover openings into enclosed spaces, for example to provide ventilation to a locker to prevent the build-up of mould or to allow vapours to disperse safely.
eBay
Black Blue Silver Canvas Yacht Boat Cover 11-22ft Barco Boat Cover Anti-UV Waterproof Heavy Duty Marine Fishing Speedboat
Aliexpress UK
Vent can easily be opened and closed from the inside via a thumbwheel. Can be partially opened if preferred. Provides excellent protection against rain ingress even when open. Requires 100mm cut out in the roof to fit.
eBay
V Shape Marine Boat Cover Waterproof Dustproof AntiUV Rain Snow Inflatable Boat Dinghy Fishing Rubber Boat Universal Kayak Cover
Aliexpress UK
This makes the Solar vent ideal boat fan as well as a caravan fan. Making it ideal for marine and outdoor applications such as boat ventilation and caravan ventilation – as well as being aesthetically pleasing with it’s very low profile and sleek design.
eBay
Rowing Machine Boat Covers Waterproof Rain Proof Sunproof UV Protector Speedboat Boats Cover Fishing Dust Protective Protection
Aliexpress UK