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Product Code: B00003442
The G961 Vertical Extension Sleeve has been designed for use with the Manthorpe range of Telescopic Underfloor Ventilators. Each extension sleeve allows the vent to reach a further two brick courses vertically. The sleeve can also be fitted to the base of the underfloor vents to provide a longer horizontal extension through larger cavities.6,600mm˛ airflowAllows ventilation to deeper underfloor voidsAdditional depth and cavity spanAllows an extra 2 courses vertically per unitProvides an extra 150mm horizontal extension through wider cavitiesQuick and easy push fit assembly with the underfloor ventsMaintains an unobstructed airflow path through the wall