Size: Outer diameter: 87mm/3.43 inches; Opening diameter: 75mm/2.95 inches; Air outlet diameter: 64mm/2.52 inches; Thread height: 22mm Material: This air conditioner outlet is made of ABS material, which is durable and not easy to break. Easy to install. Convenient ventilation and provide a comfortable in-car environment. Easy to clean: The vents are very easy to clean, just wipe with a damp cloth. Function: It can effectively replace old or damaged parts of RVs. Suitable for Bus Boat Yacht 87mm 75mm Wide application: This air conditioner outlet is suitable for air conditioner vents of ships, boats, yachts, buses, and RVs.