P121-DOME-CI Cast Iron Low Profile Dome for Z121 Roof Drains
The P121-DOME-CI is a rugged, cast iron replacement dome built to restore full functionality to your Z121 Series roof drain systems. Designed with a low-profile shape for installations with limited vertical clearance, this dome offers effective debris protection while maintaining unrestricted water flow on flat or low-slope commercial roofs.
Compatible with both U.S. and Canadian Z121 models, the dome securely fits into the existing drain body and helps prevent clogging from leaves, gravel, or rooftop debris. Its durable cast iron construction is built to endure harsh rooftop conditions, including UV exposure and thermal cycling.
Key Features:
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Fits Z121 Series roof drains (USA and Canadian versions)
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Low-profile design ideal for tight spaces or protected roof assemblies
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Made from heavy-duty cast iron for long-term performance
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Shields the drain from clogging caused by rooftop debris
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Easy to install as a direct replacement for damaged or missing domes
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Alternate part numbers: P121-CI, P121-CAST-DOME, Z121-CAST DOME, P-121-CI-DOME, Z-121-CI, and others
This replacement dome is a dependable solution for maintaining roof drainage efficiency and reducing the risk of water pooling or overflow.
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