UL 199-2020 pdf download.Automatic Sprinklers for Fire-Protection Service. 5.3 ASSEMBLY LOAD – The extension force applied to the sprinkler frame by the assembly of its operating mechanism. 5.4 AUTOMATIC SPRINKLER – A sprinkler intended to
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UL 199-2020 pdf download.Automatic Sprinklers for Fire-Protection Service. 5.3 ASSEMBLY LOAD – The extension force applied to the sprinkler frame by the assembly of its operating mechanism. 5.4 AUTOMATIC SPRINKLER – A sprinkler intended to
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