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1. MOST RECENT

   

   CSA ANSI 3.21:19▹

   Industrial gas-fired natural draft heaters for installation in non-hazardous and hazardous locations in oil and gas process applications

   standard by CSA Group, 03/01/2019 in English, French.

   Languages: English,French

   Priced From:

   • $599 Secure PDF
   • $599 Printed Edition

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2. MOST RECENT

   

   CSA 2.3:21/ANSI Z21.47:21▹

   Gas-fired central furnaces

   standard by CSA Group, 05/01/2021.

   Languages: English

   Historical Editions: CSA ANSI Z21.47-2016/CSA 2.3-2016, CSA ANSI Z21.47-2012/CSA 2.3-2012, CSA ANSI Z21.47-2006/CSA 2.3-2006 (R2011), CSA ANSI Z21.47-2003/CSA 2.3-2003

   Priced From:

   • $299 Secure PDF
   • $299 Printed Edition

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3. MOST RECENT

   

   CSA ANSI Z21.74a-2010▹

   Addenda 1 to Z21.74-1992, Portable Refrigerators for Use With HD-5 Propane Gas

   standard by CSA Group, 05/01/2010.

   Languages: English

   Priced From:

   • $72 Secure PDF
   • $72 Printed Edition

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