Underfloor Vent Horizontal Front Extension +115mm

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

• 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