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    1. eBay
    2. Home & Garden
    3. Yard, Garden & Outdoor Living
    4. Hydroponics
    5. Air Ventilation & Extraction
    6. Metal Air Duct Connectors/Reducers for Hydroponics
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    Metal Air Duct Connectors/Reducers for Hydroponics

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    Shop by Category

    • Fans, Filters & Environmental Control
    • Air Ventilation & Extraction
    • Carbon Filters
    • Climate Control & Air Purification
    • Ducting & Accessories
    • Year Manufactured

      • 1977
      • 2000
      • 2016
      • 2017
      • 2018
    • Voltage

      • 110 V
      • 120 V
      • 220 V
      • 240 V
      • Not Specified
    • Material

      • MetalFilter Applied
    • Vent Style

    • Ventilation System

    • Type

    • Suitable For

    • Condition

      • New
      • Open box
      • Seller refurbished
      • Used
      • For parts or not working
    • Price

      • Under $45.00
      • $45.00 to $95.00
      • Over $95.00
      • Please provide a valid price range
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    • Best Match
    • Time: ending soonest
    • Time: newly listed
    • Price + Shipping: lowest first
    • Price + Shipping: highest first
    • Distance: nearest first
    List View

    1-48 of 172 Results

    • FAN 6" 2-Speed Fan Clip On Oscillating Fan for Hydroponic Grow Tent 1" Pole

      FAN 6" 2-Speed Fan Clip On Oscillating Fan for Hydroponic Grow Tent 1" Pole

      C $23.36
      138 sold
    • 4" Hydroponics Air Carbon Charcoal Filter Odor Control Scrubber Inline Fan

      4" Hydroponics Air Carbon Charcoal Filter Odor Control Scrubber Inline Fan

      4.5 out of 5 stars
      (11)11 product ratings - 4" Hydroponics Air Carbon Charcoal Filter Odor Control Scrubber Inline Fan
      C $35.61
      Was: C $76.44
      C $47.16 shipping
      2,569 sold
    • Hydroponic CO2 Generator 8 Burner Auto Piloting Natural Gas carbon Dioxide

      Hydroponic CO2 Generator 8 Burner Auto Piloting Natural Gas carbon Dioxide

      C $357.32
      C $108.48 shipping
      58 sold
    • Auto Pilot Hydroponic Greenhouse room CO2 4 Burner Generator Propane LP GAS

      Auto Pilot Hydroponic Greenhouse room CO2 4 Burner Generator Propane LP GAS

      4.5 out of 5 stars
      (3)3 product ratings - Auto Pilot Hydroponic Greenhouse room CO2 4 Burner Generator Propane LP GAS
      C $339.46
      C $102.10 shipping
    • Simple Deluxe 20 Inch 3Speed High Velocity Heavy Duty Metal Industrial Floor Fan

      Simple Deluxe 20 Inch 3Speed High Velocity Heavy Duty Metal Industrial Floor Fan

      C $75.28
      C $39.75 shipping
      or Best Offer
      536 sold
    • Simple Deluxe Clip On Fan OR Wall Mount Oscillate Digital Fan for Home Grow Tent

      Simple Deluxe Clip On Fan OR Wall Mount Oscillate Digital Fan for Home Grow Tent

      4 out of 5 stars
      (21)21 product ratings - Simple Deluxe Clip On Fan OR Wall Mount Oscillate Digital Fan for Home Grow Tent
      C $55.17
      Was: C $58.69
      C $31.02 shipping
      447 sold
    • Hurricane Classic Oscillating Wall Mount Fan 16 in 736503

      Hurricane Classic Oscillating Wall Mount Fan 16 in 736503

      4.5 out of 5 stars
      (53)53 product ratings - Hurricane Classic Oscillating Wall Mount Fan 16 in 736503
      C $63.81
      C $38.35 shipping
      or Best Offer
    • Wall-Mount Duct Grille Vent for Heating Cooling Ventilation, White Steel, 4-Inch

      Wall-Mount Duct Grille Vent for Heating Cooling Ventilation, White Steel, 4-Inch

      C $22.96
      C $56.79 shipping
    • KIT OF 12 FANS 6" 2-Speed Fan Clip On Oscillating Fan for Grow Tent 1" Pole

      KIT OF 12 FANS 6" 2-Speed Fan Clip On Oscillating Fan for Grow Tent 1" Pole

      C $269.54
      Only 1 left!
    • SYD SPECTRUM 4" 200 CFM Inline Duct Fan with Variable Speed Controler HVAC

      SYD SPECTRUM 4" 200 CFM Inline Duct Fan with Variable Speed Controler HVAC

      C $49.83
    • New ProGrow 4" Inline Fan/Carbon Filter/Ducting Indoor Ventilation Combo Kit

      New ProGrow 4" Inline Fan/Carbon Filter/Ducting Indoor Ventilation Combo Kit

      C $205.00 to C $225.00
      Free shipping
      4 watching
    • New ProGrow™ Inline Duct Fan Blower Speed Controller Hydroponic (4"/6"/8" Inch)

      New ProGrow™ Inline Duct Fan Blower Speed Controller Hydroponic (4"/6"/8" Inch)

      C $109.99 to C $149.99
      Free shipping
      3 watching
    • New ProGrow 6" Inline Fan/Carbon Filter/Ducting Indoor Ventilation Combo Kit

      New ProGrow 6" Inline Fan/Carbon Filter/Ducting Indoor Ventilation Combo Kit

      C $230.00 to C $255.00
      Free shipping
      3 watching
    • 4" inch Inline Duct Fan Exhaust Air Blower w/ Speed Controller NEW RECONDITIONED

      4" inch Inline Duct Fan Exhaust Air Blower w/ Speed Controller NEW RECONDITIONED

      C $34.99
    • 6" inch Inline Duct Fan Exhaust Air Blower w/ Speed Controller

      6" inch Inline Duct Fan Exhaust Air Blower w/ Speed Controller

      C $79.96
    • COMBO COMMERCIAL 6" Inline Duct Fan SPEED/CON & 24 in Air Carbon Filter POWERFUL

      COMBO COMMERCIAL 6" Inline Duct Fan SPEED/CON & 24 in Air Carbon Filter POWERFUL

      C $197.86
      Free shipping
    • SYD SPECTRUM 4" 200 CFM Inline Duct Fan HVAC Quiet

      SYD SPECTRUM 4" 200 CFM Inline Duct Fan HVAC Quiet

      C $44.83
    • Case of 4! Gazillion Bubbles Kids Bubble Indoor Outdoor Fun Gift Toys 1L.

      Case of 4! Gazillion Bubbles Kids Bubble Indoor Outdoor Fun Gift Toys 1L.

      C $65.01
      Free shipping
    • SYD SPECTRUM 8" 677 CFM pure power Inline Duct Fan hydroponic led grow light

      SYD SPECTRUM 8" 677 CFM pure power Inline Duct Fan hydroponic led grow light

      C $119.18
    • VIVOSUN 4 Inch Air Carbon Filter Odor Control with Australia Virgin Charcoal New

      VIVOSUN 4 Inch Air Carbon Filter Odor Control with Australia Virgin Charcoal New

      1 out of 5 stars
      (1)1 product ratings - VIVOSUN 4 Inch Air Carbon Filter Odor Control with Australia Virgin Charcoal New
      C $155.94
      Free shipping
      or Best Offer
      Only 1 left!
    • 6" inch Inline Duct Booster Fan Exhaust Blower Cooling Ventilation

      6" inch Inline Duct Booster Fan Exhaust Blower Cooling Ventilation

      C $23.95
    • 6" Inline Duct Fan Booster Blower Exhaust Ducting Air Cooling Vent Fan 260 CFM

      6" Inline Duct Fan Booster Blower Exhaust Ducting Air Cooling Vent Fan 260 CFM

      4.5 out of 5 stars
      (30)30 product ratings - 6" Inline Duct Fan Booster Blower Exhaust Ducting Air Cooling Vent Fan 260 CFM
      C $33.05
      Was: C $71.34
      C $45.88 shipping
      3,731 sold
    • iPower 4" Inline Duct Ventilation Fan & Variable Speed Controller

      iPower 4" Inline Duct Ventilation Fan & Variable Speed Controller

      C $72.73
      C $24.66 shipping
      92 sold
    • iPower 10" Inline Duct Ventilation Fan & Variable Speed Controller

      iPower 10" Inline Duct Ventilation Fan & Variable Speed Controller

      C $118.67
      C $35.13 shipping
    • Active Aqua Hydrofarm Reservoir Cover, 25-Gallon

      Active Aqua Hydrofarm Reservoir Cover, 25-Gallon

      C $64.63
      Was: C $92.28
      C $30.40 shipping
    • iPower HIFANXVENT120METAL 120CFM Ultra-Quiet HVAC Exhuast White Metal Grille

      iPower HIFANXVENT120METAL 120CFM Ultra-Quiet HVAC Exhuast White Metal Grille

      C $129.96
      Free shipping
    • 4" Inch Inline Duct Booster Cooling Fan Exhaust Blower Aluminum Blade US

      4" Inch Inline Duct Booster Cooling Fan Exhaust Blower Aluminum Blade US

      C $29.22
      Was: C $63.68
      C $25.46 shipping
    • 2 Pack 4" Inch Inline Duct Booster Cooling Fan Exhaust Blower Aluminum Blade US

      2 Pack 4" Inch Inline Duct Booster Cooling Fan Exhaust Blower Aluminum Blade US

      C $42.10
      0 bids
      C $45.88 shipping
      Ending Thursday at 11:57 EST2d 7h
    • 1500W AC 110V-260V Power 2 Wired Connect Variable Speed Motor Controller Switch

      1500W AC 110V-260V Power 2 Wired Connect Variable Speed Motor Controller Switch

      C $11.47
      C $1.26 shipping
      108 sold
    • 4" 150CFM Hydroponic Air Carbon Filter Odor Control Scrubber for Inline Exhaust

      4" 150CFM Hydroponic Air Carbon Filter Odor Control Scrubber for Inline Exhaust

      3.5 out of 5 stars
      (3)3 product ratings - 4" 150CFM Hydroponic Air Carbon Filter Odor Control Scrubber for Inline Exhaust
      C $35.61
      Was: C $76.44
      C $58.64 shipping
      450 sold
    • Titan Controls CO2 Regulator - Greenhouse Hydroponics Grow Room Pressure Gauge

      Titan Controls CO2 Regulator - Greenhouse Hydroponics Grow Room Pressure Gauge

      4.5 out of 5 stars
      (16)16 product ratings - Titan Controls CO2 Regulator - Greenhouse Hydroponics Grow Room Pressure Gauge
      C $124.56
      C $153.14 shipping
    • 4" Inch Duct Booster Inline Blower Vent Fan Cooling Exhaust Aluminum Blade

      4" Inch Duct Booster Inline Blower Vent Fan Cooling Exhaust Aluminum Blade

      C $26.79
      0 bids
      C $39.50 shipping
      Ending Thursday at 14:41 EST2d 10h
    • 6 inch Exhaust Fan Wall Mount Ventilation for Kitchen Toilet Bathroom (White)

      6 inch Exhaust Fan Wall Mount Ventilation for Kitchen Toilet Bathroom (White)

      C $30.03
      C $2.54 shipping
    • Green Air Products 24 Hours Timer and Cooling Thermostat Model 24-CT-1

      Green Air Products 24 Hours Timer and Cooling Thermostat Model 24-CT-1

      C $127.62
      C $39.50 shipping
    • 4" Flange Filter Hydroponic Air Odor Control Scrubber Inline Exhaust

      4" Flange Filter Hydroponic Air Odor Control Scrubber Inline Exhaust

      C $35.61
      Was: C $76.44
      C $34.39 shipping
    • 4" 6" 8" Inch Inline Duct Fan Exhaust Blower HIGH CFM Ventilation Cool Vent

      4" 6" 8" Inch Inline Duct Fan Exhaust Blower HIGH CFM Ventilation Cool Vent

      C $29.22 to C $95.59
      Was: C $63.68
      C $66.30 shipping
      225 sold
    • 4" Flange Filter Hydroponic Air Odor Control Scrubber Inline Exhaust

      4" Flange Filter Hydroponic Air Odor Control Scrubber Inline Exhaust

      C $33.17
      0 bids
      C $34.39 shipping
      Ending 24 Jan at 1:53 EST4d 21h
    • Hydro Innovations 6" Ice Box Heat Exchanger Wall Mount Bracket Kit for #904490

      Hydro Innovations 6" Ice Box Heat Exchanger Wall Mount Bracket Kit for #904490

      C $31.91
    • Vivosun 4 inch 100CFM Inline duct booster fan

      Vivosun 4 inch 100CFM Inline duct booster fan

      C $26.80
      C $47.73 shipping
      or Best Offer
    • iPower 4 Inch Booster Inline Duct Vent Blower Exhaust and Intake HVAC Fans

      iPower 4 Inch Booster Inline Duct Vent Blower Exhaust and Intake HVAC Fans

      5 out of 5 stars
      (6)6 product ratings - iPower 4 Inch Booster Inline Duct Vent Blower Exhaust and Intake HVAC Fans
      C $37.00
      C $42.93 shipping
      293 sold
    • 6 inch Exhaust Fan Wall Mount Ventilation for Kitchen Toilet Bathroom (White)

      6 inch Exhaust Fan Wall Mount Ventilation for Kitchen Toilet Bathroom (White)

      C $24.64 to C $49.45
      Was: C $53.18
      Free shipping
    • 4" Inch Inline Duct Booster Cooling Fan Exhaust Blower Aluminum Blade US

      4" Inch Inline Duct Booster Cooling Fan Exhaust Blower Aluminum Blade US

      C $26.79
      0 bids
      C $25.46 shipping
      Ending Today at 19:03 EST14h 24m
    • LOT TWO 20" Metal Wall Mount Oscillation Fan 220V 3-Speed Air Flow Circulate Fan

      LOT TWO 20" Metal Wall Mount Oscillation Fan 220V 3-Speed Air Flow Circulate Fan

      5 out of 5 stars
      (1)1 product ratings - LOT TWO 20" Metal Wall Mount Oscillation Fan 220V 3-Speed Air Flow Circulate Fan
      C $215.67
      Was: C $319.04
      C $108.48 shipping
      or Best Offer
    • 2pc 4" Duct Booster Inline Blower Fan Cooling Exhaust Blower Blade Aluminum

      2pc 4" Duct Booster Inline Blower Fan Cooling Exhaust Blower Blade Aluminum

      C $42.10
      0 bids
      C $31.84 shipping
      Ending 24 Jan at 1:48 EST4d 21h
    • Hurricane Commercial Grade 4" Inline Fan - 171CFM - AWESOME! Garden Grow Climate

      Hurricane Commercial Grade 4" Inline Fan - 171CFM - AWESOME! Garden Grow Climate

      C $63.75
    • Inline Circular Duct Blower Ventilation Vent Fan for 4" Hose 120V with Cord/Plug

      Inline Circular Duct Blower Ventilation Vent Fan for 4" Hose 120V with Cord/Plug

      C $63.80
      C $24.49 shipping
      2 watching
    • CO2 Regulator Replacement

      CO2 Regulator Replacement

      C $30.63
      C $27.73 shipping
    • 12" InLine Duct Fan Vent Exhaust Air Cooled Hydroponic Fan 1200CFM 2700RPM 210W

      12" InLine Duct Fan Vent Exhaust Air Cooled Hydroponic Fan 1200CFM 2700RPM 210W

      C $134.00
      Was: C $191.43
      or Best Offer

    Results Pagination - Page 1

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