Horizontal Front Extension 115mm

To provide horizontal front extension to the Timloc telescopic underfloor ventilator to accommodate different wall, cavity and brick courses.
Always use in conjunction with a Timloc telescopic underfloor ventilator and extension accessories.
Fits between the airbrick and upper front opening of the telescopic underfloor ventilator to accommodate external walls of more than 102.5mm thickness, to a maximum of 215mm.