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Manrose 1230L White In-Line Backdraught Shutter 100mm / 4"

1230L

27 in stock for 2-3 day delivery see more info
£9.29 inc Vat
£7.74 ex Vat
Free delivery for orders over £100 ex VAT

In-Line Backdraught Shutter – 100mm, Prevents Reverse Airflow in Ducted Ventilation Systems

This 100mm in-line backdraught shutter is designed to prevent unwanted airflow from entering ducted ventilation systems when the fan is not in operation. Suitable for horizontal or vertical installations, it ensures energy efficiency and comfort in residential and commercial applications.

  • Prevents Reverse Airflow: Automatically closes when the fan is off, stopping cold air or odours from re-entering the space.
  • In-Line Installation: Fits directly into 100mm (4") ductwork for seamless integration into new or existing ventilation systems.
  • White Finish: Discreet and clean appearance, ideal for visible sections of ductwork where aesthetics matter.
  • Spring-Loaded Flaps: Designed for reliable opening and closure with minimal air pressure loss during fan operation.
  • Universal Application: Suitable for use in bathroom, kitchen, utility, or commercial ventilation systems.
Technical Specification
  • Mounting: In-line within 100mm duct
  • Function: Prevents backdraughts
  • Material: Lightweight, durable plastic
  • Diameter: 100mm (4")
  • Colour: White

Add this in-line shutter to your duct system to block reverse airflow and improve energy efficiency!

Technical Information
C/w Humidistat N
C/w Pullcord N
Ean Code 5020953306122
S4 - Size 100mm / 4 Inch
Product Backdraught Shutter
Type In-Line
Colour White
Mounting Recessed
Use Domestic
Thread Shape Round
Impeller Diameter 100 mm
Delivery

Delivery Costs

Our standard delivery charge to UK mainland addresses is £5.90 ex-VAT.

Take advantage of FREE* Delivery when you spend over £100 (per order) ex-VAT.

*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12.00 ex-VAT.

Solar Panels, Batteries and Inverters

Due to their size all solar panels, batteries and inverters orders up to 50 qty will be despatched on a pallet and incur a £120** ex-VAT delivery charge.

**£180 ex VAT to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes.

Click here to find out more.

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