[" and Features: Male backdraft shutter is lightweight and for ducting. Designed to provide anti back draught, and fit in between Solid Plastic Ducting, Flexible Ducting. Gravity shutter flap, effectively prevent the wind back flow. For use in ventilation applications kitchens, toilets, bathrooms and hydroponics. Specification: Type: 100mm, 150mm, 200mm Material: ABS Dimensions: For detail sizes as follows: 100mm: Cabiber: 100mm Width: 85mm Height: 120mm 150mm: Cabiber: 146mm Width: 80mm Height: 174mm 200mm: Cabiber: 190mm Width: 85mm Height: 224mm Color: White Quantity: 1 Pc Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Fan Vent Back Draught Shutter"] Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.