ventilation window for yachts

ventilation window for yachts materials: stainless steel sheets (2 mm) central part - plastic seal - a special ring with reflector water (fast flow of water from otrazhaetsya wrench flats and is removed from the inlet ports) has 3 positions - open, closed, ventilated through a special slot at the bottom of the grooves and sleeves, rotary motion is converted into translational