1 2

Manrose

Manrose Fix Kit Gravity White 4"

Manrose Fix Kit Gravity White 4"

404922
£9.48 GBP
£9.48 GBP
Sale Sold out
Tax included. Shipping calculated at checkout.

In stock
  • Free shipping for orders over £100. See shipping policy for restrictions

Shipping

Free delivery for orders over £100 within UK mainland. This does not apply to large products (such as those above 1m of length), heavy products (including aggregates, compost and wood logs) and fragile products (such as ceramics, shower enclosures etc.). See shipping policy for restrictions. 
Free local delivery above £50 and £5 charge for delivery under £50 within a 3 mile radius and £7 up to 6 mile radius.  
Standard Shipping - United Kingdom (UK Mainland Excluding Northern Ireland)
  • Lighter items (under 1kg) - £4 and free for orders over £100
  • Smaller items (1 - 10kg) - £7 and free for orders over £100
  • Larger items (10kg - 30kg) - £15 and free for orders over £350
  • Bulky items (30kg and above) - £35 with minimum order value of £100
Express Shipping - United Kingdom (UK Mainland Excluding Northern Ireland)
  • Lighter items (under 1kg) - £7 and free for orders over £100
  • Smaller items (1 - 10kg) - £10 and free for orders over £100
  • Larger items (10kg - 30kg) - £20 and free for orders over £350
Standard Shipping (Northern Ireland and Scottish Islands & Highlands) 2 to 7 business days
  • Lighter items (under 1kg) - £7
  • Smaller items (1 - 10kg) - £15
  • Larger items (10kg - 30kg) - £25
  • Bulky items (30kg and above) - £35 with minimum order value of £100

Returns

Read our returns and refund policy

View full details

The Manrose 4" Fix Kit Gravity in White is a practical, all-in-one wall venting solution ideal for a wide range of domestic ventilation applications. Designed for use with 100mm (4") extractor fans and systems, this kit includes a gravity-operated external grille and a 380mm length of high-quality aluminium ducting.

Whether you're venting a bathroom, kitchen, utility room, or laundry appliance, this kit provides everything needed to complete a neat, durable, and functional through-wall extraction setup.

Key Features & Benefits

  • Complete Venting Kit
    Contains both the gravity grille and aluminium ducting for straightforward installation.
  • Gravity Louvre Grill – White
    External wall grille opens only when airflow is active, helping to reduce draughts, backflow, and insect ingress.
  • Flexible Aluminium Ducting – 380mm
    Lightweight yet durable duct, perfect for directing airflow through walls with minimal resistance.
  • Universal 100mm (4") Compatibility
    Suitable for use with most standard 4" extractor fans and appliances.
  • Weather-Resistant External Grill
    Made from UV-stabilised plastic, the grill is designed to withstand UK weather conditions and maintain appearance over time.

Technical Specifications

Attribute Specification
Product Type Wall Ventilation Kit
Grill Type Gravity Louvre
Grill Colour White
Grill Size 100mm (4") Diameter
Ducting Type Flexible Aluminium
Ducting Length 380mm
Ducting Diameter 100mm (4")
Boxed Weight 200g
Material Plastic (grill), Aluminium (ducting)
Installation Wall Mounting

What's Included

  • 1 x White Gravity Louvre Grill (100mm)
  • 1 x 380mm Flexible Aluminium Duct

Ideal Applications

  • Bathroom extractor fan outlet
  • Kitchen cooker hood extraction
  • Utility room or tumble dryer vent termination
  • Through-wall ventilation for domestic spaces

FAQs

Q: What is a gravity grille and how does it work?
A: A gravity grille uses weighted flaps that automatically open when air flows through from the fan and close when the fan is off. This helps prevent backdraughts, cold air, and pests from entering.

Q: Is the aluminium ducting rigid or flexible?
A: The included ducting is flexible aluminium, making it easy to shape through wall cavities or tight spaces.

Q: Can this kit be used with a ceiling-mounted fan?
A: This kit is designed for wall termination. For ceiling fans, consider an in-line ducted setup with roof vent termination.

Q: Are fixings included?
A: Fixings are not included in the kit. Standard wall plugs and screws can be used based on the installation surface.

Warranty & Aftercare

  • Manufacturer Warranty: 1 year
  • Maintenance Advice: Periodically inspect the gravity flaps for obstructions or dirt buildup to ensure proper function.
  • Support: Manrose offers customer service for installation advice and component compatibility.

Why Choose Manrose?

Trusted by tradespeople and homeowners alike, Manrose offers reliable, affordable ventilation solutions built for UK homes. This 4" Fix Kit with gravity grille and ducting is ideal for quick installations where performance and simplicity are key.