10 Best Extractor Fan Cover To Stop Draughts for 2025

Manrose

• Quiet Operation at 27dB. Note: Product is tested in an anechoic chamber to a recognized standard.
• Timer over run, backdraught shutter
• Unique turning vane technology

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.

SPARES2GO

• SPARES2GO Stainless Steel Cowled External Extractor Wall Vent Outlet with Cushioned Non Return Flap (100mm, 4")
• Stainless steel square hooded wall vent with non return, cushioned low noise flap, screw fixings, retainer clips and seal.
• Specifications: 100mm (4") diameter - circular pipe / hose fitting, overall outer measurements: 150mm X 150mm (6" Sq), stainless steel.
• This stylish steel wall extractor hooded vent outlet has an unobtrusive profile, a cushioned low noise flap and a weather seal to prevent unwanted leaks and drafts. Ideal for all tumble dryer vent pipes / hoses, bathroom vents & extractors, air conditioning units, kitchen fans & vents, all home wall vents, heat transfer and ventilation systems, gas & electric dryers, cooker hood extractors, as well as a wide variety of industrial uses.

Fantronix

• Brown Plastic Ducting Air Inlet / Air Outlet with Gravity Shutters - 6 inch / 150mm round male spigot on the back of the grille for indoor or outdoor use.
• 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.
• 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.

Blauberg UK

• Easy to fit cowled shutter wall grille duct kit for cooker hood, bathroom, toilet, kitchen ventilation fans and tumble dryer extract air.
• Telescopic solid plastic wall sleeve, extendable from 300 to 500 mm - 12 to 20 inches.
• 154x154 mm overall square white vent cowl with flap shutter to stop draughts, wind and air 100 mm, 4 inch duct connection.
• Connects to bathroom extractor fans and ducting that serves kitchen cooker hoods and tumble dryers with a universal 4 inch flange.
• Also available in terracotta, brown, black, grey & cotswold stone.

Awenta

• Size: 150mm - size of the rounded wall hole part
• EXTERNAL SIZE 250 x 250 mm
• Ventilation cover for round ventilation systems; Material: plastic.

Kair

• Brown 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.
• 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.
• 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. Airflow performance independently tested by BSRIA or BRE. Free Air: 7200mm2. Static Pressure Drop in Pascals: 15 l/s = 10.94 Pa - 30 l/s = 18.59 Pa - 60 l/s = 24.21 Pa.

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.

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.

Kair

• Brown Plastic Ducting Air Inlet / Air Outlet with Gravity Shutters - 6 inch / 150mm round male spigot on the back of the grille for indoor or outdoor use.
• 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.
• 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. Airflow performance independently tested by BSRIA or BRE. Free Air: 16,000mm2. Static Pressure Drop in Pascals: 15 l/s = 6.91 Pa - 30 l/s = 8.76 Pa - 60 l/s = 11.10 Pa.