Roof Terminal UB35 MultiVent 150mm + Tile 25-45°Article number: 456801
"Ubbink multivents are specially designed for systems requiring a low resistance terminal. The multivent service terminals are suitable for mechanical and natural (passive) ventilation installations.
Multivents are suitable for roof pitches of 25º - 45º and come complete with flashing - a universal base for both tiles and slates (160mm dia).
The free vent areas of the units are:
125mm dia = 12,250mm²
160mm dia = 20,000mm²
The pressure airflow resistance of both units is <1.0 Pascal at 225m³/h"