Dimensional data is subject to manufacturing tolerances and change without notice.
ENGINEERING SPECS: Zurn Z121-E 12-in. roof drain includes a dura-coated cast iron (DCCI) body with combination membrane flashing clamp / gravel guard, static extension, and low-silhouette poly dome.
Pipe Size (A)
(in.) |
Approx.
Weight (lbs.) |
Dome Open
Area (sq. in.) |
| 2 - 4, 6 |
26 |
78 |
Outlet Types
| Outlet Type |
Available Pipe
Sizes (in.) |
Body Height
Dimension (E) (in.) |
| 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
- Poly Dome* (4-1/4 in. height) with DCCI Body (Z)
- Aluminum Dome (6-9/16 in. height) with DCCI Body (ZA)
- Cast Iron Dome (4-1/4 in. height) with DCCI Body (ZC)
- Plain Bronze Dome (3-7/8 in. height) with DCCI Body (ZRB)
*Regularly furnished unless otherwise specified
Available Accessories
- Acid Resistant Epoxy Coated Finish (-AR)
- Secondary Clamping Collar (-SC)
- Bronze Mesh Screen Over Dome (-BS)
- Stainless Mesh Screen Over Dome (-SS)
- Underdeck Clamp (-C)
- Neo-Loc Test Cap Gasket (2 - 4 in. NL Bottom Outlet Only) (-TC)
- Top-Set® Roof Deck Plate (Replaces both underdeck clamp and roof sump receiver) (-DP)
- Vandal-Proof Secured Top (-VP)
- Adjustable Drain Riser Extension Assembly (from 3-5/8 to 7-1/4 in.) (-DR)
- Vertical Expansion Joint (-XJ)
- Top-Set® Adjustable Extension Assembly (-EB)
- Stainless Steel Perforated Gravel Guard (-84)
- Flush Grate (Replaces dome strainer) (-FG)
- Stainless Steel Perforated Extension (-85)
- Galvanized Cast Iron (-G)
- 2-in. High External Water Dam (-89)
- Roof Sump Receiver (-R)
- 90° Threaded Side Outlet Body (-90)
