GM 712 Solar powered fan ventilator for solar ventilation,no batteries required, designed for domestic, marine or caravan use,these solar ventilators can be mounted flat against metal, glass, fibreglass,brick surfaces etc,they ventilate and extract heat and odours and are great for use in conservatories and greenhouses also,the ventilator is constructed within a weather and water resistant plastic housing for protection,one of the smaller sized solar ventilators in our range these measure approx 150mm square x 56mm high and come complete with a separate mounting grille for the interior surface,the hole cutout size is 130mm max,price includes uk delivery.