10 Best Extractor Fan Vent Back Draught Shutter for 2026
List of Top Rated Extractor Fan Vent Back Draught Shutter from thousands of customer reviews & feedback.
Updated On August 2026 1225 Reviews Studied By Customer Ratings
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100mm In-line Extractor Fan Vent Back Draught Shutter With One Spring And Two Flaps
Manrose
- Can be mounted onto the spigot of the
- 4 inch 100mm XF, SF fans
- or In-Line in the ducting
2 
Blauberg Fans Grille DECOR185X185/150GWHITE White
Blauberg Fans
- 150mm 6 inch duct and extractor fan connection sizes
- Gravity operated back draught shutter
- Removable blades for easy cleaning
3 
Blauberg UK Round Ceiling Vent Diffuser Extract Grille Valve with Retaining Ring (100 mm 4" Dia), White, 100mm
Blauberg
- Easy to install. Simply connect to duct and clip into ceiling with cir clip provided
- Adjustable ceiling mounted air valve grille finished in brilliant white.
- Disc is mounted on a central threaded core for adjustment that can be locked to prevent tampering.
- German made with 5 year warranty.
4 
100mm in-line Extractor Fan Vent Back Draught Ducting Shutter 4 Inch
SmartHome
- Back Draught Shutter Extractor Vent.
- Pack of 1.
- Fits Inside standard size 100mm diameter 4 inch ducting.
- Stops back draught and wind noise when a fan is switched off.
- Suitable for commercial and domestic use.
5 
White Gravity Grille 100mm - 4 inch External Ducting Air Vent with Round Spigot and Non-Return Gravity Shutters
Blauberg
- Plastic ducting air Inlet/ air outlet with Gravity shutters - 4 inch/ 100mm round male spigot on the back of the grille for indoor or outdoor use. Designed to terminate your extract duct to an external wall.
- Non-return shutter flaps close automatically When not in use. Stops unpleasant odours, noises, or draughts flowing back through your duct. Gravity flap - no need for springs that could break. Gravity operated flaps that close when Not in use.
- Easy to install, just push-fit duct and fittings together. Perfectly suited bathroom or kitchen extractor fan, hydroponics fan, or in-line extract fan.
- This grille can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive ventilation, positive Input, air conditioning, HVAC, and heat recovery systems.
- Suitable to use in compliance with part F building regulations.
6 
Ducting Pipe Non Return Valve 100mm Round Duct Rigid Tube Connector with Shutter Extractor Fan Backdraft Damper Stopper...
Awenta
- Material: PVC plastic
- Colour: white
- Diameter: 100mm
7 
Klimapartner RKI 100 mm (4 Inch) Backdraught Shutter Insertable Vent with Rubber Seal
Klimapartner
- Back draught flap for insertion into ventilation pipe size DN 100 (4 inch). 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
- A good sealing and fastening of the duct is achieved by the foam strip attached to the outside of the damper.The rubber sheath applied to the damper prevents loud rattling when the flap blades are opened. The housing of the flap is made of galvanized steel, the flap blades are made of aluminum, the axle and spring are made of stainless steel
- Designed for use in AC, dryers, exhaust, extractor or range hoods, Heating, Vent and other residential, commercial and industrial HVAC applications
- INSTALLATION; The backflow valve 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.
8 
neverest RK 100 mm In-line Backdraught Shutter Vent for Extractor Fans with Foam Sealed
neverest
- Backdraft Nominal width 100 mm (4 inch) (exact dimensions see drawing), Galvanized steel housing, Flap leaves made of aluminum, Axis and spring made of stainless steel, Back draught valve for insertion into ventilation pipes, Reduces noise due to internal rubber seal
- The backflow flap RK opens and closes automatically. It has a smooth-running spring and should therefore be installed horizontally or vertically only as an exhaust air flap.
- The damper blades open even at low air flow. The inner sound insulation strip prevents loud rattling when striking the damper blades.
- Backflow flaps prevent the ingress of cold air or wind through the ventilation pipe. Here, the flap is installed so that the damper blades open only in the outflowing air direction. This means that no (cold) air / wind can penetrate from outside through the ventilation duct.
- 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 installation of the flap so that it can open and close optimally.
9 
Kair Connector with Backdraught Shutter 100mm - 4 inch Non-Return Damper Flap to Connect Duct Pipe or Flexible Ducting H...
Kair
- 100mm / 4 inch plastic ducting connector with inline backdraught shutter / gravity damper flap.
- Stop smells and prevent cold air coming through your extract fan or ducting.
- Will fit inside 100mm round pipe or 102mm flexible hose and can be used to join multiple lengths of pipe together to form a long duct run.
- Perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood and other ventilation applications.
- Genuine Kair product & covered by the Kair manufcturers 100% satisfaction guarantee for your peace of mind.
10 
Backdraft Shutter/Coupler - for Ducting - (1 Pack) Fans - 100mm 4'' Round PVC - Vent - Back Draft
VENTS
- Will reduce heat loss when room is not being extracted
- Prevent animals entering through the ducting
- Can be fitted Verticaly or Horizontaly
- Reduce noise's and smells from entering through ducting
