Product information
Horizontal front extension sleeve - Product 1203
Fits between the airbrick and upper front opening of the telescopic underfloor ventilator to accommodate external walls of more than 102.5mm thickness, up to a maximum of 215mm.
Installation advice
Product 1203 should be fitted with the slotted end to accept the airbrick. 1203 sleeves can also be slotted together to form longer sections if required
Video
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