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The MIFAB Cast Iron RoofGuard dome is a patented design which increases surface area up to five times or more. Its design makes it virtually uncloggable—eliminating the costly repairs clogged drains cause. Both plastic and cast iron RoofGuard domes have met the flow rate criteria for the newest IAPMO Standard, ASNI Z1034-2015. The dome is perfect as both a retrofit and as part of a full drain assembly for new installations.
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