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Control Dampers

Punny HVAC Duct & Sheet Metal Work provides premium control dampers engineered to deliver precise regulation of air volume, flow, and pressure throughout HVAC duct systems. Available in light, medium, and heavy-duty constructions, these dampers are designed to perform reliably even under high duct pressures. The blades operate in parallel or opposed configurations with optional synthetic tip seals to ensure minimal air leakage and optimal energy efficiency. Constructed from galvanized iron (GI), stainless steel, or aluminum, our control dampers are ideal for commercial, industrial, and residential applications, combining durability, precision, and long-lasting performance for any HVAC system.

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Rectangular Damper – External Linkage

Our rectangular dampers with external linkage are designed to provide smooth, precise airflow control in rectangular duct systems. Featuring single or double-skin aerofoil blades and a durable external linkage mechanism, these dampers ensure consistent air distribution and uniform pressure across the system. Built with robust galvanized iron frames and optional synthetic blade seals, they deliver high performance and minimal leakage. Ideal for both commercial and residential applications, these dampers support energy-efficient operation, improved indoor air quality, and reliable long-term performance in high-capacity duct networks.

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Rectangular Gear Type Damper

Rectangular gear-driven dampers combine precision-engineered GI aerofoil blades with a concealed gear mechanism, offering maintenance-free, smooth operation for a wide range of HVAC applications. Designed for various pressure ratings, the sturdy hat-channel frame provides structural stability and long-term reliability, while the gear system ensures accurate modulation of airflow. Suitable for commercial, industrial, and residential systems, these dampers are ideal for large duct runs, variable air volume (VAV) applications, and environments requiring fine-tuned airflow balancing, providing both efficiency and quiet operation.

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Rectangular Damper – Spigot Connection

Our rectangular dampers with spigot connection offer a versatile solution for linking rectangular duct systems to round ducts, ensuring airtight transitions and minimal leakage. Constructed from galvanized iron with V-grooved single-skin or double-skin aerofoil blades, they feature concealed side linkages, synthetic bushings, and optional blade seals for enhanced efficiency. Perfect for commercial, industrial, and residential installations, these dampers allow reliable airflow control across diverse duct layouts while simplifying installation and maintaining consistent system performance.

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Round Dampers

Round dampers are specifically designed for manual balancing of round duct systems in both residential and commercial projects. Constructed from galvanized steel, they feature beaded casings, corrosion-resistant blades, and a hand-operated quadrant for precise positioning. Ideal for low-pressure and standard-velocity HVAC systems, these dampers ensure consistent airflow, quiet operation, and maintenance-free performance in supply, exhaust, and return ductwork, making them a dependable solution for both exposed and concealed installations.

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Back Draft / Non-Return Dampers

Back draft or non-return dampers protect HVAC systems by preventing reverse airflow while allowing smooth passage in the intended direction. Constructed with galvanized iron frames and aerodynamic aluminum blades, they ensure quiet, low-maintenance operation. Optional synthetic blade seals further enhance airtightness, reducing energy loss and improving system efficiency. Suitable for commercial, light industrial, and residential applications, these dampers are ideal for air intake, exhaust, and pressure relief systems, providing reliable performance, equipment protection, and consistent airflow in any environment.