Zurn Z121-FG Roof Drain — Flush Grate
Dimensional data is subject to manufacturing tolerances and change without notice.
Download Specifications PDF
| Pipe Size (in.) |
Approx. Weight (lbs.) |
Dome Open Area (sq. in.) |
| 2 - 4, 6 | 22 | 23 |
ENGINEERING SPECS: Zurn Z121-FG 12-in. roof drain includes a dura-coated cast iron (DCCI) body with combination membrane flashing clamp / gravel guard, and a flat cast-iron grate.
Outlet Types
| Outlet Type | Available Pipe Sizes (in.) |
Body Height Dimension (in.) (E) |
| Inside Caulk (IC) | 2 - 4, 6 | 5-1/4 |
| Threaded (IP) | 2 - 4, 6 | 3-3/4 |
| No-Hub (NH) | 2 - 4, 6 | 5-1/4 |
| Neo-Loc (NL) | 2 - 4 | 4-9/16 |
Dome Options
| Grate* (4-1/4 in. height) with DCCI Body (Z) |
*Regularly furnished unless otherwise specified
Available Accessories
| Acid Resistant Epoxy Coated (-AR) | Roof Sump Receiver (-R) |
| Underdeck Clamp (-C) | Secondary Clamping Collar (-SC) |
| Top-Set® Roof Deck Plate (replaces underdeck clamp and roof sump receiver) (-DP) | Neo-Loc Test Cap Gasket (2 - 4 in. NL Bottom Outlet Only) (-TC) |
| Top-Set® Drain Riser (adjustment from 3-5/8 to 7-1/4 in.) (-DR) | Vandal-Proof Secured Top (-VP) |
| Static Extension (1 - 4-in.; specify height) (-E) | Vertical Expansion Joint (-XJ) |
| Top-Set® Adjustable Extension Assembly (-EB) | Stainless Steel Perforated Gravel Guard (-84) |
| Static Extension with Secondary Clamp Collar at Body (for clamping at roof drain body) (-ES) | Stainless Steel Perforated Extension (-85) |
| Galvanized Cast Iron (-G) | 90° Threaded Side Outlet Body (2 - 4-in. only) (-90) |
