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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
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
RTP07
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
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
RTP08
Thermo Manufacturing 16050 Ultra Fire Resistant Thermo Pan, 16 x 47-1/2"
Thermo Manufacturing 16050
Item#:
16050
Manufacturer Item:
16050
Manufacturer:
THERMO MANUFACTURING
RectorSeal® 81965 Metal Ceiling Support Rough-In-Flange, 16" L x 12" W x 3/8" H
RectorSeal L02004
Item#:
L02004
Manufacturer Item:
81965
Manufacturer:
RECTORSEAL - HOUSTON
RectorSeal® L02005 Drop Ceiling Flange,
,
,
L02005
Item#:
L02005
Manufacturer Item:
81963
Manufacturer:
RECTORSEAL - HOUSTON
TrueZONE HZ311 Zone Control Panel For conventional, single-stage applications. Up to 3 zones. 1H/1C Conventional Clean, Professional Installation Smaller Footprint Great for New Construction.Kit includes discharge air temperature sensor and 40 VA Transformer
Honeywell HZ311
Item#:
HZ311
Manufacturer Item:
HZ311
Manufacturer:
HONEYWELL
TrueZONE HZ311 Zone Control Panel For conventional, single-stage applications. Up to 3 zones. 1H/1C Conventional Clean, Professional Installation Smaller Footprint Great for New Construction.Kit includes discharge air temperature sensor and 40 VA Transformer
Honeywell HZ322
Item#:
HZ322
Manufacturer Item:
HZ322
Manufacturer:
HONEYWELL
TrueZONE HZ311 Zone Control Panel For conventional, single-stage applications. Up to 3 zones. 1H/1C Conventional Clean, Professional Installation Smaller Footprint Great for New Construction.Kit includes discharge air temperature sensor and 40 VA Transformer
Honeywell HZ432
Item#:
HZ432
Manufacturer Item:
HZ432
Manufacturer:
HONEYWELL
TrueZONE HZ311 Zone Control Panel For conventional, single-stage applications. Up to 3 zones. 1H/1C Conventional Clean, Professional Installation Smaller Footprint Great for New Construction.Kit includes discharge air temperature sensor and 40 VA Transformer
Honeywell HZ311K
Item#:
HZ311K
Manufacturer Item:
HZ311K
Manufacturer:
HONEYWELL
TrueZONE HZ311 Zone Control Panel For conventional, single-stage applications. Up to 3 zones. 1H/1C Conventional Clean, Professional Installation Smaller Footprint Great for New Construction.Kit includes discharge air temperature sensor and 40 VA Transformer
Honeywell HZ322K
Item#:
HZ322K
Manufacturer Item:
HZ322K
Manufacturer:
HONEYWELL
TrueZONE HZ311 Zone Control Panel For conventional, single-stage applications. Up to 3 zones. 1H/1C Conventional Clean, Professional Installation Smaller Footprint Great for New Construction.Kit includes discharge air temperature sensor and 40 VA Transformer
Honeywell HZ432K
Item#:
HZ432K
Manufacturer Item:
HZ432K
Manufacturer:
HONEYWELL
The TrueZONE Bypass constant pressure regulating damper (CPRD) is a round static pressure relief damper. It is used in forced-air bypass applications to relieve excess static pressure when some of the zone dampers are closed.