Reviews Tunnel Ventilation Ducts

AGV Unisex-Adult Full Face K-5S Tornado Motorcycle Helmet (Fluo Yellow, XX-Large)

  • Fiberglass and carbon fiber composite outer shell.
  • Two outer shells and four EPS sizes for the most accurate fit.
  • Dimensions of outer shell and EPS optimized using FEM (Finite Element Method) analysis.
  • IVS (Integrated Ventilation System) with wide ducts hollowed into the EPS shell optimized in wind tunnel testing.
  • Central front air intake recessed in outer shell profile with a high-capacity direct duct.
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Draft Blocker 6 Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Vent Deflector 6 Inch

  • Back draft damper is made for insertion into inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring....
  • Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC....
  • INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal....
  • The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from....
  • Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are....
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Draft Blocker 4 Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Vent Deflector (4'' Inch)

  • Back draft damper is made for insertion into inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring and can be installed either horizontally or vertically. The flap is suitable for retrofitting, since it is completely inside the duct.
  • Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC applications.
  • INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. The Backdraft shutter is installed so that the damper blades open only in the outflowing air direction..
  • The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically.
  • Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ....
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Draft Blocker - 4'' Inch Backdraft Damper Duct - Draft Stopper - Backflow Preventer - Inline Fan Vent - Vent Deflector (4'' Inch)

  • Back draft damper is made for insertion into inch ventilation ducts. The backflow damper RKI opens and closes automatically. It has a strong spring and can be installed either horizontally or vertically. The flap is suitable for retrofitting, since it is completely inside the duct.
  • Damper has 2 valves, designed for use in air conditioners (AC), dryers, exhaust, extractor or range hoods, heating ducts, vents and other HVAC applications.
  • INSTALLATION: The backflow flap is installed by inserting it into the ventilation pipe until it stops. The position of the spring should be horizontal for horizontal installations so that it can open and close optimally. The Backdraft shutter is installed so that the damper blades open only in the outflowing air direction..
  • The backflow flap opens and closes automatically at low air volumes. It has a smooth-running spring and an internal foam strip to keep the blades from rattling and can be installed horizontally or vertically.
  • Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ....
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4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector Silver

  • 【Material】The 4 inch backdraft damper is made of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel..
  • 【Installation】The backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation..
  • 【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use..
  • 【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications..
  • 【Note】Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different..
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4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Vent Deflector (4 in)

  • 【Material】The 4 inch backdraft damper is made out of a Galvanized steel, the flap leaves are made of aluminum, while the Axis and spring are made of stainless steel..
  • 【Installation】The backdraft damper is installed by pushing it into the ventilation pipe as far as it will go. The position of the spring should be horizontal when the flap is installed horizontally so that it can be opened and closed optimally. This also applies to the vertical installation..
  • 【Function】This airflow regulating backdraft shutter fits over the TD lip and is designed to improve ventilation by preventing air from re-circulating when the fans are not in use..
  • 【Wide Application】 These backdraft dampers can be widely used in ACs, exhaust fans, extractors, range hoods, heating ducts, vents and other residential, commercial and industrial applications..
  • 【Note】Back draught valves can be inserted into ventilation ducts which are flexible or non flexible. Cannot be used with plastic ducts as the sizes are different..
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Panasonic FV-40VQ4 WhisperCeiling 380 CFM Ceiling Mounted Fan , White

  • Quiet air flow: Designed for light commercial applications, this powerful yet quiet ventilation fan moves 390 CFM of air at 3.0 sones.
  • Long life, guaranteed: Panasonic ventilation fans use less energy to move larger volumes of air. Less energy leads to less overheating and motor failure, saving you on repair costs. Included 3-year limited warranty.
  • Easy to install: Designed for 6" ducts. The double hanger-bar system (expandable up to 24") is ideal for positioning the fan exactly where you want it.
  • Clean air: Panasonic ventilation fans will increase your air quality, eliminating humidity, mold, mildew, and other air pollutants from any room.
  • Code compliant: This product is ENERGY STAR 3.0 certified and complies with ASHRAE 62.2, LEED, California Title 24 and WA Ventilation Codes.
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Kitchen Ventilation Fan Sound

  • HIGH-CAPACITY FAN: Ventilation fan operates on a single, impact-resistant centrifugal blower wheel with 308 CFM, 2.9 Sones, and 120V for a powerful....
  • HEAVY-DUTY: Housing is constructed of 20-gauge galvanized steel and features an 8" round metal duct connector to provide long-lasting use.
  • CUSTOMIZATION: Fan ducts horizontally, vertically, or in-line with a separate adapter for your convenience.
  • EFFECTIVE: Motors are permanently lubricated to provide continuous and quiet operation.
  • IDEAL FOR LARGE ROOMS: High-capacity ventilation fan is great for conference rooms, public restrooms, and other areas in commercial buildings that....
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Panasonic FV-1115VKL2 WhisperGreen Select Ventilation Fan with Light, 110-130-150 CFM

  • QUIET AIR FLOW: Designed for light commercial applications, this powerful yet quiet ventilation fan moves 290 CFM of air at 2.0 sones..
  • LONG LIFE, GUARANTEED: Panasonic ventilation fans use less energy to move larger volumes of air. Less energy leads to less overheating and motor failure, saving you on repair costs. Included 3-year limited warranty..
  • EASY-TO-INSTALL: Designed for 6" ducts. The double hanger-bar system (expandable up to 24") is ideal for positioning the fan exactly where you want it..
  • CLEAN AIR: Panasonic ventilation fans will increase your air quality, eliminating humidity, mold, mildew, and other air pollutants from any room..
  • CODE COMPLIANT: This product is ENERGY STAR certified and complies with ASHRAE 62.2, LEED, IAP, EarthCraft, California Title 24 and WA Ventilation Codes..
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Broan-NutoneL300High Capacity Ventilator Fan, Commercial Exhaust Fan, 2.9 Sones, 120V, 308 CFM (Renewed)

  • HIGH-CAPACITY FAN: Ventilation fan operates on a single, impact-resistant centrifugal blower wheel with 308 CFM, 2.9 Sones, and 120V for a powerful and effective performance.
  • HEAVY-DUTY: Housing is constructed of 20-gauge galvanized steel and features an 8″ round metal duct connector to provide long-lasting use.
  • CUSTOMIZATION: Fan ducts horizontally, vertically, or in-line with a separate adapter for your convenience.
  • EFFECTIVE: Motors are permanently lubricated to provide continuous and quiet operation.
  • IDEAL FOR LARGE ROOMS: High-capacity ventilation fan is great for conference rooms, public restrooms, and other areas in commercial buildings that require ongoing ventilation.
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