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Model: (03-051) WFD - Wall Flex Duo - Weld Fume, Dusts & Gases - Self Cleaning filters - 1000 to 2600 CFM - PES


The Wall Flex Duo is an ideal solution for SINGLE or DUAL workstations that require “capture at source” and/or ambient collection as well as filtration of airborne contaminants such as welding fumes, grinding dust, etc.

This solution comes pre-engineered and ready to use. The two (2) "self-supporting” extraction arms offer at source capture of contaminants. The adjustable inlets capture fugitive emissions in an ambient/general ventilation fashion.

Exhaust air can be optionally distributed through “Push-Pull” high velocity jets that project the air over 50’ & de-stratify the air in the upper echelons of the facility. This allows for best dilution of fugitive emissions (fumes not captured at source). In all cases, the contaminated air is filtered and returned to the facility.

The Wall Flex Duo comes typically equipped with the following components:

  • Direct mount fan (1.5 HP, 115/1/60) Optional: 3, 5, 7.5, & 10 HP
  • High efficiency “Nano-fiber” cartridge filter
  • Filter cleaning system
  • Cam-lock dust tray
  • Dual blowback dampers
  • Two (2) Extraction arms, up to 43’ in length
  • 1.1 KW (1.5 HP)/115V/1/60Hz fan
  • Pre-wired switch
  • Motor overload
  • Cord and plug

    The filter box is made of powder coated 12-14-16 gauge sheet steel sheet. It comes complete with integrated wall bracket, extraction arm brackets, and all necessary installation components. Please note: Ducted systems will require duct and sheet metal components to be supplied by others.



    0001 - Installation Examples - How products go together: 001 - Spec Drawings: 002 - Brochures: Buyer Guides:

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    Main System / Part
    Part # Description
    WF-DUO-2.0HP-NC Standard WF DUO without arms c/w the following features:
  • 12/14/16 ga. all steel construction
  • Exhaust fan 575V/3/60 (upgraded to 2HP, 1550 CFM)
  • Self-Cleaning filter system
  • Blow back dampers
  • All steel 5 Litre dust tray/drawer 
  • WF-DUO-2-NA-2.0HP-2 Standard WF DUO without arms c/w the following features:
  • 12/14/16 ga. all steel construction
  • Exhaust fan 575V/3/60 (upgraded to 2HP, 1550 CFM)
  • Self-Cleaning filter system
  • Blow back dampers
  • All steel 5 Litre dust tray/drawer 

  • Main System - Flexi-I Extraction Arms - 6.5'' diameter
    Part # Description
    P-006 Flexi-I Extraction Arm 160mm (6.5")Ø - 1.5m (5')L. c/w damper and wall/fan bracket.  
    P-007 Flexi-I Extraction Arm 160mm (6.5")Ø – 2m (7')L. c/w damper and wall/Fan bracket.  
    P-008 Flexi-I Extraction Arm 160mm (6.5")Ø – 3m (10')L. c/w damper and wall/Fan bracket.(wall mount)  
    P-009 Flexi-l Extraction Arm 160mm (6.5")Ø – 4m (14')L. c/w damper and wall/Fan bracket.  
    P-010 Flexi-I Extraction Arm 160mm (6.5")Ø – 5m (17')L. c/w damper and wall/Fan bracket. Complete with larger diameter friction disk  

    Main System - Flexi-II Extraction Arms - 8'' diameter
    Part # Description
    P-143 Flexi-II Extraction Arm: 200mm (8”)Ø – 2m (7')L. c/w damper and wall/Fan bracket.  

    Main System - Pre-Engineered-Kits
    Part # Description
    WF-DUO-2-NA-3HP Standard WF DUO without arms c/w the following features:
  • 12/14/16 ga. all steel construction
  • Exhaust fan 575V/3/60 (upgraded to 3HP, 2000 CFM)
  • Dual function - "Push Pull" air vents or "Source Capture" connections to extraction arms
  • Self-Cleaning filter system
  • Blow back dampers
  • All steel 5 Litre dust tray 

  • Fan / Motor Upgrades or Options (when ordering main unit)
    Part # Description
    EAF-10HP 10 HP Fan Upgrade (2000-2800 CFM) 3 phase only, switch & plug by others, Model P-156 
    EAF-2HP 2HP Fan Upgrade (900 CFM - 1500 CFM) 3 phase only, switch & plug by others, Model P-153 
    EAF-3HP 3HP Fan Upgrade (1100CFM - 2000 CFM) 3 phase only, switch & plug by others, Model P-154  
    EAF-5HP 5 HP Fan Upgrade (1500-2200 CFM) 3 phase only, switch & plug by others, Model P-155 
    EAF-7.5HP 7.5 HP Fan Upgrade (2000-2800 CFM) 3 phase only, switch & plug by others, Model P-156 

    Extraction Arms
    Part # Description
    P-144 Flexi-II Extraction Arm: 200mm (8")Ø – 3m (10')L. c/w damper and wall/Fan bracket.  
    P-145 Flexi-ll Extraction Arm: 200mm (8")Ø – 4m (14')L. c/w damper and wall/Fan bracket.  
    P-146 Flexi-II Extraction Arm: 200mm (8")Ø – 5m (17')L. c/w damper and wall/Fan bracket.  
    P-171 3m (10') Flexi II 200mm (8") ø Extraction arm for mounting to horizontal Surface (EG: Mobi Flex, Table, etc.) c/w damper and horizontal surface mounting bracket.  

    Speed Control
    Part # Description
    WF-DUO-2-10-1.5HP 1200 CFM Wall Flex high efficiency filtration system c/w 1.5 HP direct mount P-Max fan 120V/1/60 TEFC motor, manual Vibra-Pulse cleaning system, hopper with dust drawer and two 10' extraction arms. Complete with plug and switch. 
    WF-DUO-2-14-1.5HP 1200 CFM Wall Flex high efficiency filtration system c/w 1.5 HP direct mount P-Max fan 120V/1/60 TEFC motor, manual Vibra-Pulse cleaning system, hopper with dust drawer and two 14' extraction arms. Complete with plug and switch. 
    WF-DUO-2-17-1.5HP 1200 CFM Wall Flex high efficiency filtration system c/w 1.5 HP direct mount P-Max fan 120V/1/60 TEFC motor, manual Vibra-Pulse cleaning system, hopper with dust drawer and two 17' extraction arms. Complete with plug and switch. 
    WF-DUO-2-5-1.5HP 1200 CFM Wall Flex high efficiency filtration system c/w 1.5 HP direct mount P-Max fan 120V/1/60 TEFC motor, manual Vibra-Pulse cleaning system, hopper with dust drawer and two 5' extraction arms. Complete with plug and switch. 
    WF-DUO-2-7-1.5HP 1200 CFM Wall Flex high efficiency filtration system c/w 1.5 HP direct mount P-Max fan 120V/1/60 TEFC motor, manual Vibra-Pulse cleaning system, hopper with dust drawer and two 7' extraction arms. Complete with plug and switch. 

    Variable Frequency Drives
    Part # Description
    VFD-230V-3-NEMA4 3.0 HP AC DRIVE ,230V single or 3 PH IN 3 PH OUT in NEMA 4 enclosure and simple "Dial/Potentiometer" speed control. 
    VFD-KIT-1HP-115-230-3 1HP 120-240V Hybrid VFD 1 Phase In, 230V 3 Phase Output 60Hz complete with:

  • VFD NEMA 4
  • 1 HP Motor
  • Wiring
  • Labor
  • Re-certification

  • PLEASE NOTE: this kit is only required when upgrading a 120V system with a VFD 
  • VFD-KIT-2HP-115-230-3 2HP 120-240V Hybrid VFD 1 Phase In, 230V 3 Phase Output 60Hz complete with:

  • VFD NEMA 4
  • 2 HP Motor
  • Wiring
  • Labor
  • Re-certification

  • PLEASE NOTE: this kit is only required when upgrading a 120 or 220/1/60 V system with a VFD 
  • VFD-KIT-3HP-220-230-3 3HP 240V Hybrid VFD 1 Phase In, 230V 3 Phase Output 60Hz complete with:

  • VFD NEMA 4
  • 3 HP Motor
  • Wiring
  • Labor
  • Re-certification

  • PLEASE NOTE: this kit is only required when upgrading a 120V system with a VFD 

  • Fan Control Panels (when ordering main unit)
    Part # Description
    P-024-2 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 0.6-1.0A OVERLOAD---> HP rating: 1/4@230/3/60, 1/2@460/3/60, 1/2@575/3/60  
    P-024-3 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 1-1.6A OVERLOAD ---> HP rating: 1/3@230/3/60. 3/4@460/3/60, 1.0@575/3/60  
    P-024-4 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 1.6-2.5A OVERLOAD ---> HP rating: 1/2@230/3/60, 1.0@460/3/60, 2@575/3/60  
    P-024-5 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 2.5-4A OVERLOAD---> HP rating: 1.0@230/3/60, 2.0@460/3/60, 3.0@575/3/60  
    P-024-6 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 4.0-6.3A OVERLOAD---> HP rating: 0.25@115/1/60, 0.5@230/1/60, 1.5@230/3/60, 3/0@460/3/60, 5.0@575/3/60 Price update Jan 30 2010 TC 
    P-024-7 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 6.0-10A OVERLOAD---> HP rating: 3.0@230/3/60 
    P-024-8 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 10-16A OVERLOAD---> HP rating: 1.0@115/1/60, 2.0@230/1/60, 5.0@230/3/60, 10@460/3/60, 15@575/3/60V  
    P-024-9 Fan Motor control station. Permits manual start-stop of the fan. Comes complete with motor overload protection and on/off control. 16-20A OVERLOAD---> HP rating: 1.5@115/1/60  

    Insulation Options (when ordering main unit)
    Part # Description
    WF-DUO-CART Mobile cart for the wallflex duo.
  • Base Plate
  • 2 side crossbars
  • 1 rear crossbar
  • 4 legs
  • 2 ULTRA DUTY casters with breaks
  • 2 ULTRA DUTY casters 

  • Silencer Option (when ordering main unit)
    Part # Description
    SIL-8 Silencer for P-Max series fan, 8" (200mm) (for use with P-Max Fans) 

    Preventative Maintenance Pressure Gauges, etc. (when ordering main unit)
    Part # Description
    PG-5 Differential pressure gage, Range: 0-5in w.c. Accuracy: ±5%,Max pressure 30PSI, Temperature range 20 to 120 ºF, 
    PG-10-1 Differential pressure gage, Range: 0-10in w.c. Accuracy: ±5%, Temperature range 20 to 120 ºF,  

    Installation Accessories
    Part # Description
    WF-DUO-PP Push Pull Ventilation kit for Wall Flex Duo. Kit includes the following:
  • 2 - Dampered inlets that allow capture of fumes at ground level
  • 1 - "Fan Tail" exhaust plenum that allows for air to be recycled up to highest portions of the shop allowing the cooler air from the lower to mix with the warm air in the ceiling. Returns energy savings and best dilution of fumes.  

  • Replacement filters - (Quantity discounts available upon request)
    Part # Description
    P-004-36 Combo Filter-spun bond polyester/activated carbon (comes complete with approx. 30 lbs. of activated charcoal) 36 Tall/Long. comes with 2 20 ft mounting cables and connection flange for exhaust of fan.
  • CF/RB 
  • 7FR0-2020-BB 24" FR Nano-Fiber Blend Cartridge for DCH-2, PCH-2 DT-1700 and Wall Flex Duo's
  • C/W 2 Vibra-Pulse tubes.  
  • BB-2416-PTFE Teflon Replacement Main Filter (PTFE)cartridge 

    Other Applications
    As we understand that our products may need to be re-applied during their life span (+20 years), we have listed below other applications that this product can be used for. Before re-applying any of our solutions, please contact one of our representatives to confirm the suitability of your application.

    Aerospace - Deburring
    Aerospace - Machining
    Aerospace - Surface Grinders
    Educational Facilities - Machine Shop
    Educational Facilities - Welding Shops
    Machine Shop - Ceramic
    Machine Shop - CNC
    Machine Shop - Plastics
    Pharmaceutical - BioFarm - Pill Productions