BDLD is a curved rectangular silencer with convensional design with width and height dimensions that doesn´t exceed the present connection dimensions. The silencer can be produced in all normally existing duct dimensions.


BDLD has an external shell of trapezoidal corrugated sheet metal for stabillity and reduced risk of oscillation.
BDLD is designed for low pressure drop with baffle combinations that attenuate aspecially low frequences well.
The type of insulation material is developed to provide good sound properties, low weight and to be cleanable.

BDLD meets the requirements of air tightness class C and pressure class 2 according to EN 1507:2006.

DLDY is equipped with joining profile type RJFP.

Tools for dimensioning and planning

The software DIMsilencer is recommended for fast choise of silencer or a complete and fast sound calculation of the duct system.

The software CADvent offers dimensioning in an environment with 3D-modelling.

Computorised planning can be conducted with automatic presentation of niose levels, pressure drop etc.

2 Softwares

  • CADvent

    CADvent is an object-oriented AutoCAD© application with a complete toolbox for drafting, dimensioning, calculation, quantification and presentation of complete HVAC installations.

    Download CADvent for 32-bit

    Download CADvent for 64-bit

  • DIMsilencer

    Based on the specified requirements DIMsilencer provides quick, professional sound calculation as well as simple product selection combined with a high degree of user-friendliness.

    Download DIMsilencer