ROCKAL Standard are fully flexible, light weight, uninsulated, laminated ducts suitable for low- and high-pressure systems. The ducts consist of several layers of aluminum and polyester laminates encapsulating a high tensile steel wire helix. Rockal flexible ducts are easily installed over either round or oval connections. At high temperature, or in case of fire, no toxic or gas emission.
The ducts are manufactured according to the international standard EN 13180.
Rockal Flexible ducts are used in heating, ventilation and air conditioning (HVAC) to deliver and remove air.
Construction: ROCKAL flexible ducts constructed out of a “sandwich construction” laminates. This means the different layers of aluminum and polyester are overlapping each other completely and encapsulates a high tensile steel wire. The multiple laminates are adhered with fire retardant thermosetting adhesive.
Temperature Range: -30 °C to + 140 °C.
Air Velocity: Max. 30 m/s (5900 ft/min).
Standard Color: Aluminum
⦁ Single layer
⦁ Double layer
⦁ Multi layer
Total thickness of layers in rendezvous area (without wire) is about 70 μm
Internal Diameter: All standard diameters ranging from 102mm to 508mm (4 – 20 inch).
Fire Class: Please see schedule on page 274.
Diameter of wire are used:
Minimum Bending Radius: 0.58 x Ø
Working Pressure: Max. 300mm WG (3000 Pa. or 10-inch WG)
Std. Length (meters)
Carton Size (mm)
Rockwool blanket insulation is a type of flexible insulation made from spun mineral wool, which is derived from a mixture of volcanic rock and slag. Rockwool Rolls are high performance solution for thermal & acoustic insulation for a range of commercial and industrial Buildings.