ANSI Z21.68 : 1985
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
03-15-2022
01-12-2013
Covers construction, performance and installation methods for thermally actuated automatic vent damper device, which forms section of vent connector from individual, automatically operated, gas fired appliance equipped with draft hood(s)
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