ANSI-Z83.20 › Complete Document History
Gas-fired tubular and low-intensity infrared heaters

Complete Current Edition:
   3RD EDITION R21 - REAFFIRMED IN 2021 - Jan. 1, 2021

Obsolete Revision Information:
   3RD EDITION ERRATA - 3RD EDITION WITH ERRATA INTERFILED - Feb. 1, 2019
   3RD EDITION - Gas-fired tubular and low-intensity infrared heaters - Jan. 1, 2016
   FOR ADDENDA B SEE - ANSI-Z83.20B - Jan. 1, 2011
   FOR ADDENDA A SEE - ANSI-Z83.20A - Jan. 1, 2010
   2008 EDITION - GAS-FIRED LOW-INTENSITY INFRARED HEATERS - Jan. 1, 2008
   1ST EDITION - GAS-FIRED LOW-INTENSITY INFRAR - Jan. 1, 2001