brand new and high quality Features: Male backdraft shutter is lightweight & 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 & 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 Male backdraft shutter is lightweight & 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 & hydroponics. Specification: