![Josam 22500 15-in. 2"-6" Combo Drain w/Dome [specify Poly or CI]](https://cdn11.bigcommerce.com/s-7wb5vs0sib/images/stencil/1280x1280/products/8318/2502/22500__69604.1592344680.png?c=1 "Josam 22500 15-in. 2\"-6\" Combo Drain w/Dome [specify Poly or CI]")
![Josam 22500 15-in. 2"-6" Combo Drain w/Dome [specify Poly or CI]](https://cdn11.bigcommerce.com/s-7wb5vs0sib/images/stencil/500x659/products/8318/2502/22500__69604.1592344680.png?c=1 "Josam 22500 15-in. 2\"-6\" Combo Drain w/Dome [specify Poly or CI]")
Product Overview
Designed for large roof areas, see Josam 22500 15-in. Combination Roof Drain and Overflow product details, available options and outlet types.
Josam 22500 15-in. coated, cast iron combination roof drain & overflow drain is designed for large roof areas. It includes:
- A one-piece double drain receiver that positions the roof drain and overflow drain side by side, requiring only a single roof penetration.
- One WEJLOC non-puncturing clamp ring with integral gravel stop to ensure a watertight seal.
- Two large polypropylene locking domes.
- Dual deckplate.
Download the full specification sheet.
Available Options
| -AE | LEVELEZE Adjustable Extension | -22 | Cast Iron Dome/Grate |
| -IRMA | Perforated Stainless Steel Extension | -23 | Rough Bronze Dome |
| -POLY | Poly Dome | -26 | Aluminum Dome |
| -RCSD | Recessed Drain Receiver | -33 | S.S. Mesh Screen Covered Dome |
| -VP | Vandal-Proof | -4 | Secondary Flashing Clamp (use with -AE only) |
| -1 | Deck Clamp Assembly | ||
| -10 | Fixed Extension Collar, CI (spec. ht.) | -T | Threaded Outlet |
| -10-20 | Fixed Extension Collar, Galvanized (spec. hgt.) | -X | Inside Caulk Outlet |
| -20 | Galvanized Cast Iron Parts | -Y | Hub Outlet w/ Gasket, 2-in. - 4-in. |
| -21 | Galvanized Cast Iron Dome Only | -Z | No-Hub Spigot Outlet |
Outlet Type
| Type # | Pipe Size (in.) |
| 22502 | 2 |
| 22503 | 3 |
| 22504 | 4 |
| 22505 | 5 |
| 22506 | 6 |
| 22508 | 8 |