Descripción
- Extension Sleeve for Cavity Wall Ventilators. Extension Sleeve for Cavity Wall Ventilators. 9 x 3 Inch. Meets requirements for British Gas. Each adaptor adds on another 200mm to sleeve length. Extendable cavity Sleeves Available in our shop. ›See more product details
Timloc9" x 3" Cavity Wall Extension Sleeve for Air Draught Ventilator Vent