Rectangular ducts are manufactured from the highest quality
thermoplastics. Properly selected type of sheet (extruded,
pressed or foamed), material thickness or welding method
(hot air, welding, extrusion welding) allow to meet the various
Different welding parameters are used for different materials.
Ventilation ducts and fittings are made according to DIN
4740 and DIN 4741 and Alnor factory standards.
For more information on types of plastics and their feature please
refer to our technical catalogue.
|Miniature picture||Product code||Name of product||Files to download|
Rectangular ducts and fittings made of plastics are
Depending on the type of termination,
|Plastic rectangular ventilation ducts|
||Plastic rectangular ventilation elbow|
Symmetric reducer for joining two rectangular ducts with
|Symmetric square-square reducer made of plastics|
||Asymmetric square-square reducer made of plastic materials|
||Symmetric square-to-round reducer made of plastics|
||Symmetric rectangular tee made of plastics|
The single-blade damper is used to control and isolate air flow in rectangular ductwork.
|Plastic single-blade damper|
The DSQW rectangular multi-blade dampers can be used to control and
|Rectangular multi-blade damper made of plastics|