This 21J13 has some cosmetic damage incurred during shipping. Unit and foam have water damage. For detailed photos please click 'See Additional Images' above. This 21J13 meets the full manufacturer's specifications, comes with the full manufacturer's warranty, and includes Alpine's premium guarantee.

For product specs and photographs of product in its original condition, click here.

This is an 8” Height Full Perimeter Flat Roof Curb for rooftop installations of 2 - 3 Ton Blueridge Package units.  Make sure you also purchase a duct cover kit if you plan on converting the unit to a downflow configuration.