Shop for Combo and Overflow Drains available in most standard drain sizes. We offer drains that come standard with a clamping ring and dome, but we also have other drains made with …

Zurn Z163 combination primary and overflow roof drain provides efficient and reliable drainage for rooftops, combining primary and overflow functions in one unit. Designed for durability and …

Our overflow drains are designed for effective water management, preventing pooling in areas prone to overflow while enhancing overall safety.

Roof Drain & Overflow Roof Drains. One-piece, cast iron base and mounting flange incorporates drain and overflow fixture; Includes cast iron collars (2), dome strainers (2) and hardware ; …

The 4″ Overflow Roof Drain with Plastic Dome is designed to fit over 4″ Sch 40 DWV pipe. These roof drains are installed on a building roof to transfer rain water from the roof to the drainage …

Coated cast iron bodies with vandal-resistant, low profile dome strainer, combination flashing clamp and gravel stop for main drain and combination flashing clamp and internal water dam …

Dam Style Overflow Roof Drains. Items 1-15 of 32. Sort By. Set Descending Direction. Cast Iron Combination Roof Drain - Deep Sump . $130.43. Add to Cart. Cast Iron Combination Roof …

Smith Light Commercial Cast Iron 148-Y02 Combination Roof and Overflow Drain, 2" No-Hub Outlet. Recommended for use on flat roofs where the roof drain assembly serves as a …

Flat Roof Drainage: Ideal for flat roofs requiring a reliable and durable drainage solution. Waterproofing Protection: The seamless design and overflow feature provide added protection …

This cast-iron roof drain features a 6-1/2-inch cast-iron dome that effectively prevents branches and other debris from entering the piping system. The drain connects to existing cast-iron …

SUN® RD4020 Coated 15" Cast Iron Bodies, (1) Combination Flashing Clamp with Gravel Stop Roof Drain and (1) Combination Flashing Clamp with 4" High Internal Water Dam Overflow …

Drain unit consists of cast iron main body, flashing rings, leaf guard and strainer domes. Flashing ring secured to main body with stainless steel fasteners. No Hub outlets. FEATURES. For use …

This durable drain system features a separate overflow connection to prevent water backup and potential roof damage during heavy rain or snowmelt. Features: Heavy-Duty 20-Ounce Copper …

Browse stainless steel roof drains with overflow from Thunderbird Products. All steel overflow roof drains made in the USA. Call Us to Place Your Order: (800) 658-2473

When you use a roof drain overflow, it effectively manages water discharge, ensuring that the excess water is quickly and efficiently drained away even in heavy rainfall. This system is …