The easy-to-install white steel valve with mounting frame has an adjustable and centralized rotary font plate with which you can vary the air flow. The ventilation valve is designed to exhaust air in residential buildings, offices, kitchens, bathrooms or other air conditioning systems and can be installed on ceilings and walls By rotating the central disc, the space expands and contracts to meet your ventilation needs Carefully packed in individual cardboard boxes to avoid damage during storage and shipping Features : Product Name: Disc Ventilation Grille. Material: ABS plastic. Color: White. Net Weight: 250g. Dimensions: 75 mm: 11 x 10 x 9 cm. 100 mm: 15 x 9.6 x 9 cm. 125 mm: 17.9 x 12 x 9 cm. 150 mm: 19.5 x 14.7 x 9 cm. 200 mm: 25 x 19 x 19 cm. Description: Depending on the application, this ventilation grille can have features such as insect grilles, differently controlled flaps and installation systems adapted to the given model. The special construction of the selected models of