Historical
ANSI Z21.40.1A-1997/CGA 2.91A-M97
Addenda 1 to ANSI Z21.40.1-1996/CGA 2.91-M96, Gas-Fired, Heat Activated Air Conditioning and Heat Pump Appliances
first addenda cga 2.91-m96/ansi summer z21.40.1a-1996 airconditioning air
CSA America, Inc. [csa]