Rebuilt Fronius Single Board Power Stage. Has a new Pinci Board from a non-used Sunpower inverter SN 26322147 ($820x0.75=$615), new fronius spare part radial and axial fans, ($60+$40=$100) Assembly labor ($60). Total: $775. Aluminum box is used and has minor cosmetic scratches, blemishes and fading. All are minor and do not impact the function of the box. Fully Tested. May be used as a power stage for Fronius IG Plus of Fronius branded Sunpower inverters that have a single power stage.