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
installation expectations.
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 |
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PVC-QDNF |
Plastic rectangular ventilation ducts
Rectangular ducts and fittings made of plastics are Depending on the type of termination, |
Plastic rectangular ventilation ducts |
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PVC-QBFF |
Plastic rectangular ventilation elbow
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Plastic rectangular ventilation elbow |
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PVC-QPR6F |
Symmetric square-square reducer made of plastics
Symmetric reducer for joining two rectangular ducts with |
Symmetric square-square reducer made of plastics |
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PVC-QPR2F |
Asymmetric square-square reducer made of plastic materials
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Asymmetric square-square reducer made of plastic materials |
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PVC-PR7F |
Symmetric square-to-round reducer made of plastics
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Symmetric square-to-round reducer made of plastics |
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PVC-TRF |
Symmetric rectangular tee made of plastics
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Symmetric rectangular tee made of plastics |
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PVC-DSQ |
Plastic single-blade damperThe single-blade damper is used to control and isolate air flow in rectangular ductwork. |
Plastic single-blade damper |
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PVC-DSQW |
Rectangular multi-blade damper made of plasticsThe DSQW rectangular multi-blade dampers can be used to control and |
Rectangular multi-blade damper made of plastics |
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PVC-SLC |
Rectangular sound attenuatorsSLC rectangular duct silencers are designed to attenuate noise in ventilation and air-conditioning systems. They are usually installed between the fan and the supply or exhaust duct, and before the air diffusers. The rectangular sound attenuator consists of a casing and integrated attenuating baffles. The casingis made of plastic, with a frame made of plastic profiles at the ends, and a version with female connections is also available. The baffle is rounded on one side and consists of a plastic frame and a sound-absorbing infill that absorbs acoustic energy. The sound-absorbing infill is a combination of non-flammable mineral wool panels. Its outer Thera are following baffle designs: SLC rectangular sound attenuators are installed in ventilation ductwork, attenuating baffles should be installed in the vertical plane. Available materials - example of designation |
Rectangular sound attenuators |