The Wizard's Replacement Drain Dome Size Chart

Need a replacement drain dome, but aren't sure of the manufacturer or drain model? You're not alone.

Weathering, corrosion and cracks make it challenging to identify what replacement dome you need. This is why we created the following drain dome size chart.

Listed widest to narrowest outside diameter (O.D.), we've included all available drain domes along with a picture and other defining characteristics. 

Once you find your dome, click the link or picture to view our product page and order online. Most domes are kept in stock so orders ship same day, and Hy-Tech offers some of the lowest pricing online.  

 

Roof Drain Dome Size Chart 

STD = Standard Dome
LP = Low Profile 

Size (O.D.)

Mfg. / Model #

Image

Height

Material

Notes

21.9" Froet 100C8 5" STD
3" LP
Cast Iron This is the bottom dome of a dual outlet drain
18-3/16" Zurn Z101 4-7/16" Cast Iron  
15.9" Froet 100C6 5" STD
3" LP
Cast Iron This is the bottom dome of a dual outlet drain
15-5/8" Smith 1010XL 5" Cast Iron, Galv., Aluminum, Bronze Has 3 tabs, which are included in the O.D. dimension
14-3/4" Blake "K" Series 8+ Outlet    8" Cast Iron Obsolete, not available
14" Wade 3508 5-3/8" Cast Iron Has 4 legs
14"  Josam 416 5-3/4" Cast Iron  
13" Josam 4114 New Style 4-3/4" Cast Iron, Galv., Aluminum, Bronze or Poly Poly domes have 2 locking tabs
12-5/8" Wade 3501 5-1/2" Aluminum Hast 4 small legs
12-7/16" Zurn Z100 4-/12" Cast Iron, Galv., Aluminum, Bronze or Poly  
12-7/16" Canplas 353556-3 4-1/2" Poly  
12-7/16" Josam 4114 Old Style 4-3/4" Cast Iron  
12-1/4" Mifab A2-PD 7-1/2" Poly Has been made in red and black
12-1/4" Watts B2-PD 7-1/2" Poly Black, no name on dome
12-1/4" Watts B2-KDM  7" Cast Iron  
12-3/16" Mifab A2-MD 6-1/8" Cast Iron  
12-1/16" Smith 1010 L  5-1/4" Cast Iron, Galv., Aluminum, Bronze or Poly Has 3 tabs, which are included in the O.D. dimension
11.77" Froet 100C4 5" STD
3" LP
Cast Iron This is the bottom dome of a dual outlet drain
11.77" Froet 100C3 5" STD
3" LP
Cast Iron This is the bottom dome of a dual outlet drain
11-3/8" Wade 3000 (new style) 5" Cast Iron, Galv., Aluminum, Bronze or Poly Has 2 locking tabs. Will not fit the old style 3500 ring
11" Wade 3000 (old style poly) 4-1/2" Poly Has two quarter circles at 180°. Bolts to ring. Bolt-to-bolt 8-3/8"
11" Thunderbird A1 ABS  4-1/2" ABS Plastic  
10-13/16" Wade 3500 (old style) 7" Cast Iron Does not properly fit New Style 3000 ring
10-9/16" Thunderbird A-1 Aluminum 4-3/4" Aluminum  
10-1/4" Josam 22010 5-3/8" Cast Iron  
10-1/16" Zurn Z121 4-3/8" Cast Iron, Galv., Aluminum, Bronze or Poly  
9-3/4" Smith 1310 4-1/2" Cast Iron, Galv., Aluminum, Bronze or Poly  
9-3/4" Olympic USIIA Aluminum 7-1/4" Aluminum  
9-5/8" Marathon Aluminator Dome 6" Aluminum  
9-5/8" Marathon BS1065 4-3/4" Cast Iron 3 bolts, 7-5/8" bolt-to-bolt
9-1/2" Sioux Chief 868 4-5/8" Aluminum, Poly. 3 bolts, 7-1/2" bolt-to-bolt
9-1/2" Portals Plus 67 4-1/2" Aluminum, Poly. 3 bolts, 7-1/2" bolt-to-bolt
8.66" Froet 100C2 5.24" Cast Iron This is the bottom dome of a dual outlet drain
8-1/2" Josam 414 High Hat 12" Cast Iron Base is beveled. 6 holes on bevel. 6" bolt-to-bolt at 180°
7-5/8" Zurn Z125 5-1/2" Cast Iron, Galv. Aluminum, Bronze or Poly  
7-5/8" Watts B3-KDM (aluminum) & B3-DM (poly) 5-1/2" Aluminum, Poly Has 3 tabs which are included in the O.D. dimension
7-1/2" Mifab A1-MD (aluminum) & A1-PD (poly)  5-1/2" Aluminum, Poly Has 3 tabs which are included in the O.D. dimension 
7-7/16" Sioux Chief 867 4-1/8" Cast Iron, Poly  
7-7/16" Canplas PVC Drain (2-4") 4-1/2" Poly P/N#353552-3
7-3/8" Wade 3200 5" Cast Iron, Gavl. Aluminum, Bronze or Poly  
7-3/16" Josam 22080, 22040 & 22202 5-3/4" Cast Iron, Galv., or Bronze  
6-5/8" Smith 1330 4" Cast Iron, Galv., Aluminum, Bronze or Poly Has multiple tabs which are included in the O.D. dimension