UL-733 › Complete Document History
Standard for Oil-Fired Air Heaters and Direct-Fired Heaters

Complete Current Edition:
   5TH EDITION - OIL-FIRED AIR HEATERS & DIRECT - May 2, 2019

Obsolete Revision Information:
   CHANGE 10/13 - REVISION CHANGE - CODE A - Oct. 9, 2013
   CHANGE 04/10 - REVISION CHANGE - CODE A - April 22, 2010
   CHANGE 12/05 - REVISION CHANGE - CODE A - Dec. 13, 2005
   CHANGE 01/99 - REVISION CHANGE - CODE A - Jan. 20, 1999
   CHANGE 01/96 - REVISION CHANGE - CODE A - Jan. 29, 1996
   4TH EDITION - OIL-FIRED AIR HEATERS & DIRECT - Aug. 25, 1993
   1975 EDITION - OIL-FIRED AIR HEATERS AND DIRE - Jan. 1, 1975