I have 2 of these heaters available for sale. Both were recovered from a shipping claim. No factory box is available but all other factory installation brackets and instructions are included. The last one to sell has a small scratch and dent. Can be mounted within 1" from the ceiling and wall on 1 side, 18" clearance required on access panel side.
Click on the Manufacturer's link above for a factory Spec Sheet. These units sell for $529.00 at other sellers!