A set of two mast arms made of galvanized steel. The arm brackets are designed for wall mounting of an 89mm diameter mast. Wall mounting is suitable for turbines up to 2.8kW.
Two arm lengths are available to avoid collisions with eaves:
FNM01XL - set of two arms, 70cm long (89mm from wall to mast axis)
The arms include shock-absorbing rubber pads necessary for installation.
When mounting wind turbines to a building, expect a 40-70% loss in production compared to mounting turbines of the same capacity on the ground at the appropriate height.