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£5.99 – £30.99 Exc VAT
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- Manufactured from corrosion resistant galvanised steel as standard
- Prevents backflow of ventilation air and entry of outside air into the ductwork
- Inline damper that falls shut when no fan is operating; blades open or close based on air pressure in the duct
- Easy to install between ventilation ducts to ensure proper air flow control
- Features two non-return valve blades that act as a check valve
We work hard to get our customers what they need when they need it. Below you will find information on our delivery service. If you have a particular need or deadline, please contact us & we’ll do our best to accommodate you.
Delivery Charges
Delivery charges start from £9.00 and vary depending on items purchased. You can review the total delivery charge on the My Basket page after adding the items that you want to buy.
Easy & Convenient Delivery
All UK orders are sent out by DPD, Tuffnells or Royal Mail and should reach you within 3 working days. Some deliveries might take longer during holidays and busy periods.
When your order is dispatched we will let you know via email. You can track the status of your delivery via the My Account section.
Next Day Delivery
We understand that sometimes you need your order in a hurry, so please contact us prior to ordering regarding next day delivery and we will do our best to arrange this.
International, Scottish Highlands, Islands & Northern Ireland
We are able to ship orders internationally, to Scottish Highlands or off-shore. Please contact us first for a delivery quote. Unfortunately, there are a small number of items which we cannot ship internationally, due to their size or weight.
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