Domes

The Zurn Z100 roof drain features a 15-inch diameter Dura-coated cast iron body and is available with multiple dome and accessory options. Dome choices include a poly dome or cast iron dome, both measuring 12-1/2 inches. Accessories such as a 13-3/4 inch clamping ring and deck plate can be specified for added installation flexibility. Key Features 15-inch diameter Dura-coated cast iron body Dome options: 12-1/2 inch poly dome (Z100-PD) or cast iron dome (Z100-CD) Clamping ring option: 13-3/4...

The Marathon BS-1043 Adjustable Drain Guard is a 5-inch dome-style guard designed to prevent debris from entering and clogging roof drains. Built from corrosion-resistant aluminum, it is both durable and lightweight. With a 5″ (127 mm) outside diameter and an overall length of 13″ (330 mm), this adjustable guard ensures secure installation and reliable long-term protection for roof drainage systems. Key Features: 5″ adjustable aluminum drain guard Dimensions: 5″ OD × 13″ length (127 mm × 330...

The Marathon 305-C1-30752 (vendor part C1-30752) is a 10-inch plastic roof drain strainer designed for dependable debris protection. This model uses a bolt-in-place, three-bolt attachment for secure installation and is supplied in black plastic. Sized at 9-1/2″ outside diameter by 4-1/2″ height, it offers an economical solution that fits many applications. Key Features: Economical and fits many applications 10″ plastic strainer with bolt-in-place, three-bolt attachment Black in color Compact...

The Marathon C1-3080 is a 10-inch cast iron strainer designed to provide superior protection for roof drains. Its heavy-duty dome construction prevents debris from blocking drainage while allowing efficient water flow. With accurate dimensions of 9-5/8″ outside diameter and 4-1/2″ height, this cast iron strainer is built for strength, long service life, and resistance to corrosion in demanding environments. Key Features: 10″ cast iron dome strainer Dimensions: 9-5/8″ OD × 4-1/2″ H Heavy-duty...

The Zurn Z121 roof drain features a 12-inch diameter Dura-coated cast iron body with a combination membrane flashing clamp and gravel guard. It can be specified with a low silhouette cast iron dome (variant Z121-CD), a matching clamping ring (Z121-CC), or a topside install Top-Set deck plate (Z121-DP). Key Features 12-inch diameter Dura-coated cast iron body Combination membrane flashing clamp and gravel guard Cast iron dome variant (Z121-CD) Clamping ring available (Z121-CC) Top-Set deck...

The Wade WP3220-1-D Cast Iron Dome is a rugged strainer designed for Wade roof drain assemblies. Made from cast iron, it provides reliable debris protection while maintaining proper water flow. This dome is built for long-term service in commercial, industrial, and institutional roof drainage systems. Key Features: • Heavy-duty cast iron construction for durability • Protects roof drains from debris while allowing water flow • Compatible with Wade roof drain bodies • Suitable for commercial...

The Marathon BS-104 Adjustable Drain Guard is a 10-inch dome-style guard engineered to keep debris from clogging roof drains. Constructed of corrosion-resistant aluminum, it provides both durability and lightweight performance. With a 10″ (254 mm) outside diameter and 13″ (330 mm) overall length, this adjustable guard offers a secure fit and long-lasting protection for commercial and industrial roof drainage systems. Key Features: 10″ adjustable aluminum drain guard Dimensions: 10″ OD × 13″...

The Zurn Z125 roof drain features an 8-3/8 inch diameter Dura-coated cast iron body with a combination membrane flashing clamp and gravel guard. It comes standard with a low silhouette poly dome, and can be specified with a cast iron dome (Z125-CD), a clamping collar (Z125-CC), or a Top-Set deck plate with dome (Z125-DP). Key Features 8-3/8 inch diameter cast iron body Combination membrane flashing clamp with gravel guard Variant options: cast iron dome (Z125-CD), clamping collar (Z125-CC),...

The Marathon C1-3131 is a 12-inch plastic twist-lock roof drain strainer engineered to protect roof drains from debris while offering easy installation. Finished in black plastic, it fits many applications where a large-diameter dome is needed. It measures approximately 12-1/4″ outside diameter and 8-3/4″ in height, making it an economical solution for commercial or residential drainage needs. Key Features: 12-inch plastic dome strainer with twist-lock attachment Outside diameter of 12-1/4″,...

The Marathon C1-3132 is a 12-inch cast iron roof drain strainer engineered for maximum durability and longevity. Its dome design helps prevent debris from clogging drains while maintaining water flow. Constructed from heavy-duty cast iron, it measures 12-1/4″ outside diameter and 7″ in height, making it an excellent choice for large roof drain systems where strength and corrosion resistance are required. Key Features: 12″ cast iron dome strainer Heavy-duty construction for long service life...

The Marathon C1-1852 is a 5-inch plastic replacement strainer designed for roof drains. It prevents debris from clogging drains and is built with a twist-and-lock friction-fit system. Constructed from durable black plastic, it provides a lightweight and economical solution for maintaining roof drainage systems. Key Features: 5-inch plastic dome strainer Twist-and-lock friction fit Black plastic construction for durability Outside diameter of 5-1/4″ and height of 5-3/4″ Economical replacement...

The Marathon BS-1045 Adjustable Drain Guard is a 13-1/2″ dome-style guard designed to protect roof drains from clogging. Built from corrosion-resistant aluminum, it provides durable, lightweight performance for commercial and industrial roof applications. Measuring 13-1/2″ (343 mm) outside diameter and 13″ (330 mm) overall length, this guard ensures reliable debris protection and proper drainage flow. Key Features: Large 13-1/2″ adjustable aluminum drain guard Dimensions: 13-1/2″ OD × 13″...

The Marathon C1-3133 is a 12-inch cast aluminum strainer engineered to protect roof drains from clogging while maintaining smooth water flow. Built from durable, corrosion-resistant cast aluminum, it delivers long service life. With correct dimensions of 12-1/4″ outside diameter and 6″ height, this dome-style strainer is a practical, economical choice for large roof drain systems. Key Features: 12″ cast aluminum dome strainer Heavy-duty, corrosion-resistant construction Correct dimensions:...

The Marathon C1-1858 is an economical 8-inch plastic strainer designed to protect roof drains from debris. Made from durable black plastic, it installs quickly using a twist-and-lock friction fit. Compact in size at 7-5/8″ outside diameter and 5-1/2″ in height, it provides a simple and cost-effective replacement solution that fits many applications. Key Features: Economical, fits many applications 8″ size with twist-and-lock friction fit design Black plastic construction Compact design for...

The Wade 3508 Cast Iron Dome is a robust, heavy-duty strainer engineered for Wade roof drain assemblies. Manufactured from durable cast iron and finished in red for easy identification, it delivers dependable debris protection without sacrificing water flow. Ideal for high-demand commercial, industrial, and institutional drainage systems, this dome ensures reliable and long-lasting performance. Key Features: • Heavy-duty cast iron construction for maximum durability • Red finish improves...

RoofGuard Drain Guard system is designed to eliminate standing water. It's patented design increases surface area by 5x or more making a RoofGuard protected drain virtually unccloggable. RoofGuard Drain is fast and easy to use, it's removable top allows easy access to drain and piping without detaching RoofGuard. Not only will RoofGuard save you money by eliminating leaks and costly repairs caused by clogged drains, but it's installation is fast, simple and requires no tools!Features:Replaces...

The Marathon C1-1870 is a 5-inch cast aluminum strainer designed to protect roof drains from debris. Built from corrosion-resistant aluminum, it provides superior durability compared to plastic alternatives. Measuring 5-1/4″ outside diameter by 5-3/4″ height, this dome-style strainer is economical, lightweight, and fits many roofing drain applications. Key Features: 5″ cast aluminum dome strainer Durable and corrosion resistant Lightweight yet strong construction 5-1/4″ OD × 5-3/4″ H...

The Marathon BS-1047 Adjustable Drain Guard is an extra-large dome-style guard designed to protect roof drains from clogging. Built from corrosion-resistant aluminum, it combines strength and lightweight performance for long-lasting durability. With dimensions of 18″ (457 mm) outside diameter and 13″ (330 mm) overall length, this adjustable guard is ideal for large roof drains in commercial and industrial settings. Key Features: Extra-large 18″ adjustable aluminum drain guard Dimensions: 18″...

The Marathon C1-1890 is an 8-inch cast aluminum strainer designed for roof drains, providing strong debris protection with a dome-style construction. Made from corrosion-resistant cast aluminum, it is both lightweight and durable. With dimensions of 7-5/8″ outside diameter and 6-1/4″ height, it serves as an economical and reliable replacement for roof drainage systems. Key Features: 8″ cast aluminum dome strainer Dimensions: 7-5/8″ OD × 6-1/4″ H Durable, corrosion-resistant construction...

The Wade 3501-D Cast Aluminum Dome is a lightweight, corrosion-resistant strainer designed for Wade roof drain bodies. Constructed from cast aluminum, it offers dependable debris protection while permitting efficient water flow. Its reduced weight makes it easier to handle and install compared to traditional cast iron models, yet it remains ideal for heavy-duty commercial and institutional drainage systems. Key Features: • Lightweight cast aluminum construction • Corrosion-resistant for long...

VTBSTR10-YW is the yellow vortex breaker strainer dome by OMG, designed to retrofit onto existing Hercules or Aluminum Classic roof drains in 3-, 4-, 5-, or 6-inch sizes. The strainer integrates vortex breaker technology in its cast aluminum dome to accelerate drainage (up to 2.5× more flow versus standard strainers), reduce “chugging” of water, and enhance performance under heavy rainfall. Its bright safety yellow finish helps visibility on the roof and marks drain locations clearly. Key...