Buy 4 get 1 FREE now available on 20kg gravelbags & selected grab bags of soils, composts & barks! (Full T&Cs)
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The vertical extension sleeve provides horizontal or vertical extension to a telescopic underfloor ventilator to accommodate different wall/cavity/brick courses etc. It fits between the upper and lower parts of the telescopic underfloor ventilator to accommodate a vertical step of morethan five brick courses.
Features and benefits
Does not restrict airflow through the main telescopic underfloor ventilator
Purpose-made accessories eliminate the need for on site modifications
Lightweight and easy to handle
Durable and totally resistant to decay
Installation advice
Product should be fitted with the slotted end to accept the airbrick. Sleeves can also be slotted together to form longer sections if required
To improve joins between the telescopic underfloor ventilator and an accessory, seal using insulating tape or duct tape
Branch deliveries within our local area are free and typically delivered within 5 working days. We try our best to accommodate delivery requests stated in the notes section of your order, and will be in touch if we don't think they are possible.
Nationwide deliveries outside of our local area have 2 options:
Parcels - Order before 1pm for next working-day delivery (In-stock items only)
Pallet Deliveries - Order before 10am for 2-working days delivery (In-stock items only)
Do you qualify for branch delivery? Click here to find out
Kerbside delivery applies to both branch and pallet deliveries. For our full delivery policy, please visit our T&Cs.
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