Roof Drain: Large Sump with -16 Internal Waterguard for Overflow Drains

Warning Cross Reference for WATTS RD-300-W is Josam 21500-16.
    

Specification
21500-16 Series coated cast iron Roof Drain, internal waterguard type and large polypropylene locking dome, WEJLOC non-puncturing clamp ring with integral gravel stop, secured plastic internal waterguard standpipe for 3 inch water depth and large sump with wide roof flange and bottom outlet.

Options
-AELEVELEZE Adjustable Extension -22Cast Iron Dome/Grate
-AERAdjustable Extension using Threaded Rod/Hdwe -23Rough Bronze Dome
-AREAcid Resistant Epoxy Coated -3Deck Clamp Assembly & Drn Receiver
-CRClamping Drain Receiver with Hardware -3CDrain Receiver and Drain Receiver Clips
-IRMAPerforated Stainless Steel Extension -4Secondary Flashing Clamp (use with -AE only)
-VPVandal-Proof -6Extra Wide Flange Drain Body, -X Only
-1Deck Clamp Assembly
-1CPDrain Receiver Clips -TThreaded Outlet
-10Fixed Ext Collar, CI (spec. ht.) -XInside Caulk Outlet
-10-20Fixed Exn Collar, Galv. (spec. hgt.) -YHub Outlet w/Gasket, 2"-4"
-2Drain Receiver -ZNo-Hub Spigot Outlet
-20Galvanized Cast Iron Parts -66No-Hub Side Outlet
-21Galvanized Cast Iron Dome Only

Type # PIPE SIZE  LBS
21502-16 2" 41
21503-16 3" 42
21504-16 4" 43
21505-16 5" 44
21506-16 6" 45
21508-16 8"