The 636 Steel Roof Cap Black is a durable, weather‑resistant exhaust termination solution designed for use with 3‑inch or 4‑inch round duct systems. Built from heavy‑gauge steel and finished with a protective black coating, this roof cap ensures long-term performance and reliable airflow for residential and light‑commercial ventilation systems. Its multi‑size compatibility makes it ideal for installers who need a flexible, dependable roof termination option.

Key Features

• Heavy‑Duty Steel Construction – Provides strength, stability, and resistance to outdoor conditions.
• Protective Black Finish – Helps prevent corrosion and blends well with most roofing materials.
• Dual‑Size Duct Compatibility – Designed to accommodate both 3‑inch and 4‑inch round duct systems.
• Efficient Exhaust Design – Supports proper ventilation for fans, appliances, and air‑moving equipment.
• Weather‑Resistant Structure – Engineered to withstand wind, rain, and temperature variations.
• Reliable Performance – Offers consistent airflow while helping protect duct systems from backdraft and debris entry.

Common Applications

• Bathroom exhaust fan venting
• Kitchen or utility room ventilation systems
• Dryer venting where allowed by local code
• General-purpose round duct exhaust terminations
• Replacement roof caps in existing duct systems