Hayward Check Valve, 4 in, Single, Y, CPVC, Socket x Socket YC20400S Nominal Size 12" X 1.25" 18 Gauge CuVerro antimicrobial copper 18 Gauge CuVerro antimicrobial copper 13' x 16' x 5 Flame resistant material won't burn immediately like cellulose mats because it melts when exposed to high heat
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