For each size clamp ring you will need the following measurements.
Roof drain clamp ring extension.
Marathon retrofit universal ring dome.
Used on roofs of any size for any type of construction where a predetermined rate of flow has been specified to limit pipe sizing or flooding of undersized pre existing storm drainage systems.
Adaptors couplings fittings.
Marathon retrofit universal clamp ring.
Light duty loose set grate removable shallow bucket q515.
Isolation deck drain with non puncturing clamp ring for standpipe 29100 no hub outlet roof drain.
Floor drains parts accessories.
Roof drains parts accessories.
Omg hercules ring.
Measure 180 across to the opposite outside edge.
Overflow roof drain for green roof ordg1 6.
The z100 e sc can be used as the lower membrane can be clamped below the secondary clamp collar and holes in the extension will allow water along that membrane to enter the drain body.
Specification 22010 series coated cast iron roof drain medium beehive dome non puncturing clamp ring with integral gravel stop medium sump with roof flange and bottom outlet application used on mid sized roofs of any construction where a medium sized drain is required.
3 bolt hole ring 120 4 bolt hole ring 180 90 5 bolt hole ring 72 dome strainer basket.
Dome 29000 roof drain.
Cast iron lower drain and wejloc clamp ring q601.
Roof drain w leveleze o ring adjustable extension ordg1.
Calibrated vane collar clamp ring c i.
Overflow roof drain for green roof with extra wide flange drain body q244.
Zurn z100 ea roof drain includes a dura coated cast iron dcci body with combination membrane flashing clamp gravel guard adjustable extension secondary clamping collar with o ring and low silhouette poly dome strainer.
28600 flo set roof drain.
Medium sump clamp ring cast iron beehive dome.