Zurn Z121 12-in. Roof Drain Specs & Options
Dimensional data is subject to manufacturing tolerances and change without notice.
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| Pipe Size (in.) |
Approx. Weight (lbs.) |
Dome Open Area (sq. in.) |
| 2, 3, 4, 5, 6 | 22 | 78 |
ENGINEERING SPECS: Zurn Z121 12-in. diameter low-profile roof drain. Dura-coated cast iron (DCCI) body with combination membrane flashing clamp / gravel guard, and low-silhouette cast iron dome.
Outlet Types
| Outlet Type | Available Pipe Sizes (in.) |
E. Body Height Dimension (in.) |
| Inside Caulk (IC) | 2, 3, 4, 5, 6 | 5 1/4 |
| Threaded (IP) | 2, 3, 4, 5, 6 | 3 3/4 |
| No-Hub (NH) | 2, 3, 4, 5, 6 | 5 1/4 |
| Neo-Loc (NL) | 2, 3, 4 | 4 5/8 |
Dome Options
| Dome* with DCCI Body (Z) |
| Aluminum Dome with DCCI Body (ZA) |
| Plain Bronze Dome with DCCI Body (ZRB) |
*Regularly furnished unless otherwise specified
Accessories
| Acid Resistant Epoxy Coated (AR) | Secondary Clamp Collar (SC) |
| Bronze Mesh Screen Over Dome (BS) | Stainless Steel Mesh Screen Over Dome (SS) |
| Underdeck Clamp (C) | Neo-Loc Test Cap Gasket (2- to 4-in. Neo-Loc Outlet Only) (TC) |
| Top-Set® Roof Deck Plate (Replaces both the Underdeck Clamp and Roof Sump Receiver) (DP) | Vandal-Proof Secured Top (VP) |
| Top-Set® Deck Riser (Adjustment from 3-5/8 to 7-1/4) (DR) | Vertical Expansion Joint (See Z190) (XJ) |
| 2-in High Static Extension 1- to 4-in. (specify ht) (E) | Stainless Steel Perforated Gravel Guard (84) |
| Top-Set® Adjustable Extension Assembly (EB) | Stainless Steel Perforated Extension (85) |
| Flush Grate (FG) | 2-in. High External Water Dam (89) |
| Galvanized Cast Iron (G) | 90° Threaded Side Outlet Body (2- to 4-in.) (Previously Z124) (90) |
| Roof Sump Receiver (R) |
