RD-4A-8-RR or RD-4A-10-RR or RD-4A-12-RR(Aluminum) Re-Roofing models available also in copper (RD-4C-8-RR or RD-4C-10-RRor RD-4C-12-RR) and stainless steel (RD-4SS-RR or RD-4SS-10-RR or RD-4SS-12-RR). Recommended Use: All purpose drain for flat roofs in existing construction employing conventional roof membrane or inverted roof membrane with ballast guard. Suitable for PVC, cast iron, steel, copper, or other type leaders.
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