1993CSA C22.2 NO.63-1993 Household refrigerators and freezers (Fourth Edition; General Instruction No. 1: November 1993; General Instruction No. 2: February 1994; General Instruction No. 3: October 1994; Update No. 4: May 2003; Update No. 5: February 2005 and Update No. 6: Decemb