The ventilation and air conditioning ducts and fittings insulated
with rubber mat constitute the complete FOAM System
piping . It consists of round spiro pipes and ventilation fittings:
elbows, T-pipes, reducing pipes, joints and stub pipes. The
inner diameters comply with the standard round elements
according to the following tolerances. The insulation made
of rubber mat is available in 4 sizes: 9, 13, 19 and 25 mm.
FOAM System is based on the aforementioned tolerances
for ducts, so as to ensure the sufficient system tightness.
Diameters of elements made of sheet, in accordance with
PN-EN-1506:2001
