Zurn Z163 - 15" Diameter Combination Main Roof and Overflow Strata Systems Square Ft Per Roll: 5

Square Ft Per Roll: 5

the 10 mil thickness enhances puncture resistance

and connects to a sweep 90° elbow or 8 in

or to percolate into the ground with a dry well or infiltration trench

making it a versatile choice for multiple applications

Zurn Z163 - 15" Diameter Combination Main Roof and Overflow Strata Systems Square Ft Per Roll: 515" Diameter Combination Main Roof and Overflow Drain with Low Silhouette Domes and Double Top Set Deck Plate The Zurn Z163 is a 15 inch combination main roof and overflow drain engineered for robust drainage, safety, and durability. Designed to serve as both primary and emergency overflow protection in one unit, it is especially suited for commercial or industrial roofing systems where roof integrity and rapid water removal are vital. It excels in