22 1435 - Roof Drains
33 4300 - Rain Water Harvesting Systems
33 4800 - Subsurface Retention/Detention Systems
- Jay R. Smith Mfg. Co. - A complete line of roof drains whether it is for a general purpose, secondary drainage, a custom made or special application product.
- Josam Company
- Lexsuco Corporation - Commercial roofing systems such as EPDM, TPO, PVC, BUR, Modified Bitumen and more.
- LSP Products Group
- Marathon Roofing Products
- Menzies Metal Products - Variety of flat roof drains, available in both copper and aluminum.
- Mifab Manufacturing
- Modi Systems
- OMG Roofing Products - One of OMG's specialties is designing and fabricating custom roof drains to fit particular site conditions.
- Roof Drain Marker Co.
- Sioux Chief Manufacturing Company
- Thaler Metal Industries - Roof accessory specialty products, fall arrest systems and custom fabrication.
- Thunderbird Products
- Watts - Watts, AERCO, Ames Fire & Waterworks, Apex, BLUCHER, Dormont, FEBCO, HF scientific, Mueller Steam Specialty, Orion, POWERS, PVI Industries, SunTouch, tekmar Control Systems
- Zurn Plumbing Products Group - "Engineered" roof-to-basement water and water drainage controls and systems.