The Item1 : BL-SVF1212A          12W    fan blade 12 inch

       Item2: BL-SVF1514A           15W    fan blade  14 inch

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These solar attic fans are easy to install. No wiring and no expensive electrician or permits are needed. Detailed installation instructions are provided with each unit.

Saves You Money! Powered completely by solar energy, this sleek and efficient vent is both compact and quiet. Place it wherever you need improved circulation; attics, lofts, workshops, storage sheds, garages, even barns.