Rectangular ducts and fittings made of plastics

Rectangular ducts and fittings made of plastics are
manufactured from sheet using the welding method. The
sheet thickness of which the ducts are made depends on
the length of the side and the circumference of the duct.
The thicknesses are selected in such a way as to ensure the
appropriate rigidity of the duct. On top of this, additional
reinforcements are applied. The dimension of the duct is the
external dimension.

Depending on the type of termination,
the system of ducts made of plastic materials is joined by
welding (female end), screwing (flanges) or gluing (only PVC).
Minimum duct size: 300 x 280 mm.
Standard duct lengths: 1000, 1500, 3000 mm.
Other lengths available upon request.

Symmetric reducer for joining two rectangular ducts with
different sections. Manufactured from plastic sheets with
the wall thickness suitable for the dimensions of the fitting.
The dimension given in the catalogue constitutes the external
dimension of the fitting.

The asymmetric reducer serves the purpose of changing of
the system’s cross-section from the rectangular cross-section
to the round cross-section. Manufactured from plastic sheets
with the wall thickness suitable for the dimensions of the
fitting. The dimension given in the catalogue constitutes the
external dimension of the fitting

The single-blade damper is used to control and isolate air flow in rectangular ductwork.
The DSQ damper can have a hand-operated damper mechanism, an externally-mounted
actuator, or an actuator mounting. In the case of manual control, the rotation is carried
out using the handle. It is possible to lock the position of blade by two locking screws.
The standard version of DSQ is manual mechanism.

SLC 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
surface is covered with a special, abrasion-resistant fabric that protects the mineral wool. The mineral wool panels are covered with a glass fiber veil in black,the coating is suitable for air flow velocities up to 20 m / s.

Thera are following baffle designs:
L – sound-absorbing baffles

SLC rectangular sound attenuators are installed in ventilation ductwork, attenuating baffles should be installed in the vertical plane.
During transport, storage and assembly of the attenuators on the construction site, be careful not to damage the surface of the baffles.

Available materials - example of designation
PVC-SLC-... - Polyvinylchloride (PVC)
PPs-SLC-... - hardly flammable polypropylene PPs
PVCW-SLC-... - Polyvinyl chloride - white
PP-SLC-... - polypropylene PP
PP-EL-s-SLC-... - hardly flammable conductive polypropylene PP-EL-s
PE-SLC-... - polyethylene PE
PVDF-SLC-... - PVDF material