Z164 12" Diameter Combination Main Roof and Overflow Drain With Low Silhouette Domes and Double Top-Set ® Deck Plate

• Combines primary and secondary drainage systems into a single assembly.
• Promotes one-for-one sizing of primary and secondary drainage systems.
• Engineered to replace (-R) roof sump receiver and (-C) under deck clamp securing method.
• Single person, above-deck installation, eliminates need for second person below deck.
• 69% labor savings over (-R) & (-C) installation during independent 3rd party testing.