Description
1Installation Location: Butterfly shaped vents are installed in the cabin to ventilate the door, cockpit and cabin, allowing smooth ventilation in the cabin. 2Mounting Size: These edge fixing holes diameter of butterfly vent is 0.138 inches, applicable for 3 mm bolts or rivets, easy to install, you can install it within sereral minutes. 3Anti Rust Polishing Surface: Made of 304 stainless steel, the surface of the outlet plate is processed by high precision mirror polishing, which is resistant to marine environment and rustproof. 4With Center Knob: Manual handle design, by rotating the center knob, you can control the opening and closing of the ventilation damper, easy to use. 5Wide Application: Circular louvered vent covers are usually used for ship support doors, cockpits, cabin ventilation, or for home sheds or other facilities.
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