Top 10 4 inch Vent Cover UK – Registers, Grilles & Vents

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Vents 4 inch Black External Gravity Grille Air Vent Cover 100 mm Extractor Fan Back Draught Shutter Covers Ducting Tumble Dryer Bathroom Outside Wall Ventilation Hose Duct Grill

VENTS UK - When the extractor fan or ventilation system is not in use, the grille shutter flaps close automatically. The gravity outlet is manufactured in compliance with the Building Regulations: Approved Document F. If required, seal using a method of your choice Popular options include Mastic Sealant Poly Cement or Tape.

The shutter works by extract air opening the blades to allow air to pass. Simple and secure installation. The grille has three non-return gravity flap outlets. This is designed to protect your ventilation duct from unpleasant odours, noises and to prevent backdraught air or rain penetration, and entry of objects, or vermin when the ventilation unit is not in operation. The item is made from premium quality plastic. Just push-fit duct and fittings together.

Airflow operated gravity shutter is a rain and weatherproof vent finished in black colour. The overall external dimensions of the grille - 155 mm x 155 mm with 4" / 100mm dia duct connection size for outdoor use. This gravity grille cover can be used as a part of a long ductwork run for a variety of purposes: whole house ventilation, positive input, conditioning ducting, passive ventilation, Heat Recovery Systems and to cover Bathroom, HVAC, Kitchen air conditioning fans.
ManufacturerVENTS UK

2. Blauberg

100 mm Plastic Louvred Wall Vent Grille 4 Inch Black Ceiling Extractor Fan Bathroom Cover with Flyscreen For Internal Or External Use Tumble Dryer Ventilation House Fans Hydroponics

Blauberg - Uv protected to prevent discoloring. Perfectly suited bathroom or kitchen extractor fan vent, hydroponics fan, or in-line extract fan. Louvered blades to reduce the effects of wind and Rain. Designed to terminate your extract duct to an external wall. Insect mesh included. Easy to install, just push-fit duct and fittings together.
ManufacturerBlauberg Fans
Weight0.1 kg (0.22 Pounds)
Part NumberDECOR 155X155/100S BLACK
ModelDECOR 155X155/100S BLACK
Warranty5 years.

3. Fantronix

100mm 4 inch Dia Brown Plastic External Fixed Blade Vent Cover Grille 155x155mm External Size Extractor Fan Air Ventilation External or Internal Wall Grille for Use Ducting Systems with Flyscreen

Fantronix - 4 inch / 100mm round male spigot on the back of the grille. Perfectly suited Bathroom or Kitchen extractor fan vent. Louvre can be flicked open with flat head screwdriver for ease of installation and to allow cleaning of insect screen. Brown plastic ducting air outlet / inlet square grille with fixed louvres and anti insect mesh / flyscreen. Easy to install, just push-fit duct and fittings together.

4. SolaDirect

Ø 100 mm / 4 in Black Cowled Gravity Flap Wall Outlet Non-Return Valve Cowl Duct Cover Air Vent Grille

SolaDirect - Uk based and vAT Registered Seller. Easily removable cowl section for easy installation and cleaning. Use for cooker hood, toilet, bathroom, kitchen ventilation fans & tumble dryer extract. Cowl protects against driving rain and wind entering your property via the duct run. Available in White, Brown, Grey. 100 mm / 4 in black cowled gravity flap Wall Outlet Non-Return Valve Cowl Duct Cover Air Vent Grille.


Cotarba Black 100 mm 4" Circle Air Vent Grille Round Ducting Cover

LOGOK2K - Any room, bedroom, dining room, basement, caravan, foyer, Conservatory, Children's Room, Bathroom, Garage.

6. Steinberg14

Black 100mm / 4 inch Round Air Vent Grill Cover Ducting Ventilation Cover with Fly Net Wall Ceiling

Steinberg14 - Premium material: louvre air vents are made of new high quality ABS plastic. Built-in fly screen mesh. Diameter for 100mm / 4" opening - Outer diameter is 126mm / 5". Reduce dust into kitchen or bathroom by fly screen mesh. Ideal for room exhaust and intake ventilation use. Comes without screws.

7. Hon&Guan

ABS ø100mm, Hon&Guan 4 inch Round Adjustable Air Vent Grill Cover Internal Ventilation Grille Built-in Filter Mesh and Silencer Cotton

Hon&Guan - Air vent grill cover make of high quality ABS. Built-in anti-dust filter mesh and silencer cotton. Wall mounted or ceiling mounted, office, perfect for bathroom, room exhaust and ventilation use. Panel detachable, easy to clean and maintain daily. Adjustable air vent, continuous press pannel to adjust inlet or close.

8. Fantronix

4 inch Dia Noise Insulation External Wall Wind Sound Baffle Vent Cover Draft Excluding Air Ventilation for Extractor Fans Heat Recovery Cottage Hotel Café

Fantronix - 100mm 4" dia duct connections. Decoration of supply and exhaust vents of public, residential and industrial ventilation systems. Non-inflammable. Preferred choice for mvhr, MEV, dMEV & single room heat recovery systems. Can be used for air intake or extract. Compatible with Ø 100 mm air ducts. Removable hood for easy cleaning with drip tray. Modern, wind and sound reducing wall mounted baffle vent with UV protection.

9. SolaDirect

100 mm / 4 in White Round Air Vent Grill Cover Ducting Ventilation Cover with Anti Fly Net Wall Ceiling

SolaDirect - Tough and strong ABS Plastic. Easy, simple and secure to fit. 100 mm / 4 in white round air vent grill cover ducting Ventilation Cover Fly Net Wall Ceiling with Fly Screen / Anti-Insect Mesh. Used as vents to rooms on the outside and inside of the building basements, garages, drying rooms and attics.
Part Number4 in / 100 mm White Cover

10. Blauberg

4 inch External Ducting Air Vent with Round Spigot and Non-Return Gravity Shutters for Kitchen Ceiling Extractor Fans Bathroom Ventilation Duct Fan Cover, Blauberg White Gravity Grille 100 mm

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. Non-return shutter flaps close automatically when not in use.

Gravity flap - no need for springs that could break. Designed to terminate your extract duct to an external wall. Perfectly suited bathroom or kitchen extractor fan, or in-line extract fan. Suitable to use in compliance with part F building regulations. Gravity operated flaps that close when Not in use. Stops unpleasant odours, noises, or draughts flowing back through your duct. Easy to install, hydroponics fan, just push-fit duct and fittings together. 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.
ManufacturerBlauberg Fans
Weight0.1 kg (0.22 Pounds)
Part NumberDECOR 155X155/100G WHITE
ModelDECOR 155X155/100G WHITE
Warranty5 years.