In stock

Roof base with duct for spiral ductwork systems

Photo of product PD-B2


The type B2 roof bases are designed for flat roofs. Versions
available on request can be installed on roof slopes up to 30
degrees. The top part of the product has a FLS steel flange for
installation of a roof air intake, a roof exhaust vent, a silencer,
or a roof ventilator (fan). The steel flange provides a sturdy
joint which can easily withstand vibration generated by fan
units. Versions available on request can also have a male
connection which can be provided with an EPDM gasket for
female-connection air intake units/exhaust vents in ventilation
systems not exposed to high vibration levels or strong gusts
of wind. The bottom of the roof base is designed for direct
fastening to spiral ducts, female connectors and fittings. The
product can be made from stainless steel or aluminium sheet
on request (aluminium roof bases are available with a male
connection only).


Alnor Ventilation Systems
Krakowska 10 Avenue
05-552 Wola Mrokowska

tel. +48 22 737 40 00