Starting with the development of the first zoning dampers and registers in the 1950s to today, with exclusive Plug & Play dampers  Zonefirst has led the way in excellence and continued innovation.
ZONEFIRST is the first company that successfully developed and marketed HVAC Zoning Systems back in the 1950s and is today a leading manufacturer of HVAC zone dampers and zoning systems. Several other major zoning companies are in business due to ZONEFIRST.
It was in the mid to late 1950s when Richard Foster developed the first automatic motorized dampers, registers and difusers that were thermostatically controlled. He marketed these products under the trade name Zone-A-Trol with another company when in 1964 he founded Trolex Corporation and the start of the well known trade name Trol-A-Temp. In 1999 the Trol-A-Temp brand was acquired by Honeywell.
Since that time, Trolex has continued to manufacture zone dampers for a number of OEMs. In 2004 Trolex re-entered the HVAC market as ZONE-A-TROL and later the ZONEFIRST tradename. This new name signifies the many firsts the company has developed in the HVAC industry. We were the first company to develop automatic dampers, registers, and diffusers for zoning, centralized zone controllers, the first zoning system to feature normally open dampers and the first to zone heat pumps in the early 1970s

Zone First ZDS1208

Outstanding Performance:
This damper was specifically designed with R8 insulation specification in mind to contribute to energy savings and help the system pass efficiency audits. Best of all, it helps eliminate hot and cold spots, the biggest cause of callbacks. The improved internal design creates a slower return that ensures a quiet operation.
Installation Made Easy
For fast, accurate installation with no callbacks, the TrueZONE Damper has you covered with a range of features that simplify installation in most applications:

Adjustable Range Stops  Easy to understand and set by utilizing a pushin lever. Theyre used to bleed air into the zones which helps lower pressure and reduce noise.

Push-In Terminals  The same easy wiring design used on TrueZONE Panels. No tools needed, has space for two wires.

Taping Flange  Lets you position insulation under it before sealing with foil tape.

Mechanical Position Indicator  Easy viewing through a clear window.

LED Indicator Lights  Red indicates the damper is closed and green indicates open (used in 3-wire applications)

Honeywell SPRD10

Outstanding Performance:
This damper was specifically designed with R8 insulation specification in mind to contribute to energy savings and help the system pass efficiency audits. Best of all, it helps eliminate hot and cold spots, the biggest cause of callbacks. The improved internal design creates a slower return that ensures a quiet operation.
Installation Made Easy
For fast, accurate installation with no callbacks, the TrueZONE Damper has you covered with a range of features that simplify installation in most applications:

Adjustable Range Stops  Easy to understand and set by utilizing a pushin lever. Theyre used to bleed air into the zones which helps lower pressure and reduce noise.

Push-In Terminals  The same easy wiring design used on TrueZONE Panels. No tools needed, has space for two wires.

Taping Flange  Lets you position insulation under it before sealing with foil tape.

Mechanical Position Indicator  Easy viewing through a clear window.

LED Indicator Lights  Red indicates the damper is closed and green indicates open (used in 3-wire applications)

Honeywell ZD18X8TZ

Thermo Manufacturing 16050 Ultra Fire Resistant Thermo Pan, 16 x 47-1/2"

Thermo Manufacturing 16050

Thermo Manufacturing 16050

EWC Controls 6URD Zone Damper Round 6" 24 VAC

EWC Controls 6URD

Aprilaire Zoned Comfort Control is designed for residential new construction and provides the components needed forsimple, reliable and profitable installs.

• Zone damper normally open; powers closed, allowing conditioned air to continue to flow if mechanical motor reaches end of service life.
  
  • Motor covered for improved appearance
    
    • Simplifies installationfewer wires to organize
      
      • Gasket material minimizes air bypass when blade is closed
        
        • All openings secured, preventing spray-in insulation from entering actuator
          
          • Simple, labor-saving design
            
            • Thumbscrew adjustable, no tools required
              
              • Simple, visual system check and troubleshooting,
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                Aprilaire 6724AA

At AprilAire, our mission has always been to make homes healthy through intuitive design and professional-grade solutionsbecause healthy homes are the foundation for healthy people, families, and communities.

Healthy Living Everyone deserves to breathe Healthy Airno matter where you live or what your circumstances are

Simplicity by Design

Our Healthy Air solutions are designed to be intuitive, easy to use, and environmentally friendly.

Making a Difference

Our work is fueled by a passion for making a Healthy Air difference.

Real

We're committed to delivering real results through dedication to our customers and solutions that perform.

Aprilaire 6706

At AprilAire, our mission has always been to make homes healthy through intuitive design and professional-grade solutionsbecause healthy homes are the foundation for healthy people, families, and communities.

Healthy Living Everyone deserves to breathe Healthy Airno matter where you live or what your circumstances are

Simplicity by Design

Our Healthy Air solutions are designed to be intuitive, easy to use, and environmentally friendly.

Making a Difference

Our work is fueled by a passion for making a Healthy Air difference.

Real

We're committed to delivering real results through dedication to our customers and solutions that perform.

Aprilaire 6814

At AprilAire, our mission has always been to make homes healthy through intuitive design and professional-grade solutionsbecause healthy homes are the foundation for healthy people, families, and communities.

Healthy Living Everyone deserves to breathe Healthy Airno matter where you live or what your circumstances are

Simplicity by Design

Our Healthy Air solutions are designed to be intuitive, easy to use, and environmentally friendly.

Making a Difference

Our work is fueled by a passion for making a Healthy Air difference.

Real

We're committed to delivering real results through dedication to our customers and solutions that perform.

Aprilaire 6815AA

Aprilaire 6814 Zone Damper 8" x 14" Bottom Mount,
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Aprilaire 6813

Aprilaire 6706 Steel Slip-In Automatic Retrofit Round Zone Damper, 6"

• Allows zoning installation without costly duct modification
• High resolution LED on the damper lights when closed, simplifying system checks and trouble shooting
• No gears technology assures long life
• Spring-open operation assures consistent airflow

Sid Harvey Item #:6706: Replaces Part #:'s : L87-259,
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Shurtape Y553-0873