Zurn Z520 / ZN520 9" Adjustable Heavy-Duty Area Drain

Product Overview

The Zurn Z520 / ZN520 Adjustable Heavy-Duty Area Drain is engineered for demanding commercial and industrial drainage applications. Its Dura-Coated cast iron body, adjustable extension frame, and deep flange slotted grate deliver long-lasting durability and installation flexibility. Available in cast iron, polished bronze, and polished nickel bronze finishes, this 9-inch drain is ideal for high-traffic environments requiring maximum performance.

Features & Benefits

• Heavy-duty Dura-Coated cast iron construction
• Adjustable extension frame for precise height alignment
• Cast iron, polished bronze, or polished nickel bronze grate options
• Integrated seepage pan with four 3/16" weep holes
• Deep-flange slotted grate designed for commercial use
• Part of Zurn’s contractor-friendly installation system

Specifications

• Top Diameter: 9" (229 mm)
• Body Material: Dura-Coated Cast Iron
• Grate Options: Cast Iron, Polished Bronze, Nickel Bronze
• Weep Holes: Four 3/16" diameter openings
• Grate Slot Width: 7/16" (not heel-proof)
• Finish Adders: ZN520 adds 5/8" to height

Installation Tips

• Ensure anchor flange is properly supported in concrete pour
• Set adjustable frame height to finished floor elevation
• Preserve nickel bronze finish using non-abrasive cleaners
• Verify grate orientation before securing hardware

Frequently Asked Questions

Is the Z520 grate heel-proof?
No. The 7/16" grate openings exceed heel-proof requirements.

What size are the weep holes?
Four 3/16" diameter holes are evenly spaced around the flange.

Can the drain height be adjusted?
Yes. The extension frame allows vertical adjustment during installation.

Is the ZN520 suitable for visible finished floors?
Yes. The polished nickel bronze grate offers a premium architectural finish.