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Easy-to-fit horizontal and vertical extension accessories designed for use with the 1201/1201XL/1201XL+ Telescopic Underfloor Ventilators. Multiple units can be used to achieve greater depths and heights.
1204 – Vertical Extension Sleeve Fits between the upper and lower parts of the telescopic underfloor ventilator to accommodate a vertical step of 6 to 7 brick courses.
