Zurn Z121-XJ Roof Drain - Vertical Expansion Joint

Dimensional data is subject to manufacturing tolerances and change without notice.

Pipe Size (in.) A	B (in.)	C (in.	D (in.)	F (in.)	Approx. Weight (lbs.)	Dome Open Area (sq. in.)
2	6-1/2 — 8-1/2	3-5/8	5	2-3/4	30	103
3	6-1/2 — 8-1/2	4-5/8	5	3-1/4	33	103
4	6-1/2 — 8-1/2	5-1/2	4-3/4	3-3/4	35	103
6	6-7/8 — 8-5/8	7-7/8	5	5	45	103

ENGINEERING SPECS: Zurn Z121-XJ 12-in. roof drain includes a dura-coated cast iron (DCCI) body with combination membrane flashing clamp / gravel guard, vertical expansion joint, and low-silhouette cast-iron dome.

Outlet Types

Outlet Type	Available Pipe Sizes (in.)
Threaded (IP)	2-4, 6
No-Hub (NH)	2 - 4, 6

Dome Options

Dome* (4-1/4 in. height) with DCCI Body (Z)
Aluminum Dome (6-9/16 in. height) with DCCI Body (ZA)
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)
Galvanized Cast Iron (-G)
Bronze Mesh Screen Over Dome (-BS)
Roof Sump Receiver (-R)
Underdeck Clamp (-C)
Secondary Clamping Collar (-SC)
Top-Set® Roof Deck Plate (replaces underdeck clamp and roof sump receiver) (-DP)
Stainless Steel Mesh Screen Over Dome (-SS)
Adjustable Drain Riser Extension Assembly (from 3-5/8 to 7-1/4 in.) (-DR)
Vandal Proof Secured Top (-VP)
Static Extension (1 - 4 in., specify height) (-E)
Stainless Steel Perforated Gravel Guard (-84)
Top-Set® Adjustable Extension Assembly (-EB)
Stainless Steel Perforated Extension (-85)
Flush Grate (replaces dome strainer) (-FG)
2-in. High External Water Dam (-89)