Josam 22500 15-in. 2"-6" Combo Drain w/Dome [specify Poly or CI]

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$476.25 - $592.00

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.

Josam 22500 Series

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

Links to Design Files


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