Low inertia Solar ventilation kit Comprising of a 12v alloy framed Monocrystalline Solar panel measuring approx 185mm x 185mm and 140mm fan complete with 3 metres of cabling and connection block, Ideal for providing gentle ventilation in chicken houses and coops etc,the solar panel can be used inside or outside,holes are provided on the rear for attaching or if you prefer,it can be glued into position,the fan has holes in the corners for easy attachment to a flat surface so can be easily wall mounted,its relatively small size also means it can be used in some larger sized ducting,we have listed these fan kits as low inertia as the fan provided has a very low startup current of approx 50ma,the solar panel is capable of 250ma in bright sunshine which means that as long as its reasonably bright conditions the fan should have no problem spinning,at least during the summer months though it may need full sunshine during the winter months when the sun is much less powerful here in the uk,overall these can move around 60cfm of air at full speed in full sun and are likely to remain spinning when other solar fans wont,though this is of course dependant on the light conditions at the time,they are great for helping to prevent respiratory problems in chickens through mass air movement and can also be used to help prevent damp for lots of different applications,Price includes UK P&P,we can also ship these worldwide if required,thanks for looking