Static Fire Dampers
Static (Fans Off) Fire dampers are UL555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems, designed to close upon the detection of heat.
Fire Dampers from United Enertech — Reliable Fire Protection & Air Control
When fire threatens, ductwork becomes one of the weak points in building systems. United Enertech designs and manufactures top-tier fire rated dampers to help stop the spread of fire through HVAC ducts and air transfer openings.
As trusted fire damper manufacturers, we provide a broad line of static, dynamic, multi-blade, and round fire dampers — all UL listed and built to protect property and lives.
Why Fire Dampers Matter
A fire damper manufacturer's job goes beyond simply making metal parts. Fire dampers are built into fire-rated walls, floors, ceilings, and HVAC shafts. When exposed to a specified high temperature (as defined in UL 555), the damper’s fusible link melts or actuator triggers, closing the damper and preventing flames, hot gases, and smoke from passing through.
Specifying the right horizontal fire damper or round fire damper ensures you meet building codes, protect occupants, and maintain system integrity.
United Enertech’s Fire Damper Product Range
As one of the leading fire dampers manufacturers, United Enertech offers a full suite of dampers tailored to diverse installations:
Static Fire Dampers
For ducts with fans off posture, designed to close automatically when heat is detected. Many static models (Curtain, Multi-Blade, Slimline) are available with UL 1½-hour & 3-hour ratings.
Dynamic Fire Dampers
These are for "fans running" applications, able to close while air is flowing, which is critical in certain HVAC systems that cannot shut down in a fire.
Round Fire Dampers & True Round Options
For circular ducts and specialized transitions, our round fire dampers maintain performance while fitting your existing ductwork.
Curtain-Style, Slimline, Multi-Blade Designs
Depending on space constraints or architectural needs, choose curtain-style for compact installations, multi-blade for robust sealing, and slimline where minimal profile is required.
Key Features of Fire Dampers
Each fire damper is built with performance and reliability in mind. Here are some of the key features that distinguish United Enertech fire dampers:
- UL Listed Fire Dampers built to UL 555 standards for dynamic/dampers in airflow.
- High Pressure & Low Pressure Options depending on duct velocity and system design.
- Various orientations—both horizontal fire dampers and vertical-mounted units to fit walls, ceilings, or floors.
- Blade styles include curtain, multi-blade, slimline, and true round, offering design flexibility and the ability to integrate into rectangular or round ducts.
- Sleeved and integral sleeve options for ease of installation and mounting.
Application Areas
Fire dampers from United Enertech are widely used in:
- Commercial high-buildings, hospitals, schools, government facilities
- HVAC systems in critical infrastructure (e.g. data centers, utilities)
- Duct systems subject to strict fire safety codes and inspections
- Retrofit projects where existing ducts need code-compliant dampers
- Architectural and mechanical spaces needing horizontal or round fire dampers
Choosing the Right Fire Damper
Selecting the appropriate fire damper for your HVAC system is critical for maintaining fire safety compliance and optimal airflow performance. Several key factors should guide your decision:
1. Determine the fire rating required
Choose between 1½-hour or 3-hour ratings, and specify whether a static or dynamic damper is needed based on the barrier type and airflow conditions.
2. Select blade and frame style
Options include curtain, multi-blade, true round, and slimline. Each has specific benefits depending on space constraints, velocity requirements, and desired pressure drop.
3. Check orientation requirements
Understand whether the application demands a horizontal fire damper (typically used in floor or ceiling assemblies) or a vertical fire damper (used in wall assemblies).
4. Ensure proper UL listing
All fire dampers should meet UL 555 standards for applications. These certifications confirm the product has undergone rigorous testing for fire resistance and performance.
5. Specify accessories and installation preferences
Choose from accessories such as factory sleeves, integral mounting configurations, actuators, and thermal sensors to streamline field installation and meet specific project needs.
Why United Enertech?
As trusted fire damper manufacturers, United Enertech is committed to delivering:
- Rigorous testing and UL certification
- Multiple product options (shape, style, rating) to fit any duct configuration
- Manufacturing quality and durability
- Excellent support with product sizing, specification, and code compliance
Contact us today to explore your options, request submittals, or determine the correct fire damper for your project. Whether you need a round fire damper or a horizontal fire rated damper, we have solutions you can rely upon.