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

H32K

Arzel BYP08 Bypass Modulating 8"
Arzel MOD-BYP08

Arzel MOD-BYP08

Arzel PMP-PUMP1 Pump Pressure/Vacuum Assembly

PMP-PUMP1

International Comfort Products DAMPSLbs.10X10-B Zone Damper Slip-In 10" x 10" 3 Wire Bottom Mount

International Comfort Products DAMPSLB10X10-B

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

ZDSM0808

InternatinOverall Length Comfort Procusts Zone Damper Round 10" 24 VAC

ZDAMPRND10INCB

Copperfield Chimney CSLF5 Quick-Cap W/Screen 5",

CSLF5

Hart & Cooley 0.012" Aluminum Inner and 0.018" G90 Galvanized Steel

Deep locking groove assures solid joint and secure lock
• Corrosion resistant aluminum inner wall for rapid warm-up
• Unique locking band provides 360 deg turning radius of the pipe and fittings
• Locking band slides over tabs easily, locks firmly without twisting
• Locking tabs hold pipe securely together, can be easily unlocked
• Positive stop provides proper alignment and positive fit for mating end of pipe or fitting
• Reinforced ends curled bead on end of outer pipe for rigidity and strength
• The allowable minimum clearance to combustibles is 1"
• A full set of installation instructions are supplied with caps and supports Hart & Cooley 10RP3 B-Vent Pipe 10" x 36" Natural Gas Aluminum Inner & Galvanized Steel Outer,
  
  

  Hart & Cooley 5RGS

All products are designed and manufactured for use within forced air systems, providing effective distribution of conditioned air from the air handler to every room of a residence.Metal duct and fittings are constructed from hot-dipped Galvanized steel. All metal products are made true to gauge. Sheet metal duct, pipe, and fittings are designed with industry and regional standards in mind, as well as ACCA and SMACNA recommendations and requirements. Products are hand-crafted to reduce noise and friction and constructed to maximize efficiency by increasing airflow without leaks. The quality of our Galvanized steel allows us to create fittings that are rust-resistant and durable

Southwark 4412

Gray Metal Products Standing S Cleat 1" x 120" 26 Gauge

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

Thermo Manufacturing 16050

Gray Metal Products Cleat Drive 96"