M00052167
New product
CSA ANSI Z21.21b-2011/CSA 6.5b-2011 (R2011) Addenda 2 to ANSI Z21.21-2005/CSA 6.5-2005, Automatic valves for gas appliances
Amendment by CSA Group, 11/18/2011
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Availability date: 01/10/2022