Working in conjunction with an Extension Sleeve, the Rear Extension Adaptor is designed to provide a clear airflow passage to the void underneath a suspended floor.  Place the Rear Extension Adaptor over the vermin grille on the rear of the Telescopic Underfloor Vent, then connect an Extension Sleeve or multiple Extension Sleeves.

Features & Benefits
– Enables extension of airflow passage beneath suspended floors
– Connects securely to Telescopic Underfloor Vent vermin grille
– Compatible with single or multiple Extension Sleeves
– Supports effective cavity ventilation
– Supplied in practical box quantities