Friedrich 
Friedrich Technical Specifications here
Manufacturers Web Sites
http://www.friedrich.com
HamiltonAir Company Inc. Contact our engineering dept. by e-mail engineering@hamiltonair.com
35 Mount Vernon Street, Ridgefield Park, NJ 07660-1496 Phone:201.440.9200 Fax:201.440.6981
262 West 38th Street, New York, NY 10018-5808 Phone: 212.682.2710