DLDY is fitted with built-in side baffles located outside the fitting dimensions. The products can be manufactured in all standard duct sizes.


DLDY has an external shell of trapezoidal corrugated sheet for stability and reduced risk of natural oscillation.
DLDY is designed for low air resistance with baffle combinations that dampen particularly low-frequency noise well.
The type of insulation material is Lindtec which has been developed to provide good noise properties, low weight and to be cleanable.

DLDY 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 noise levels, pressure drop etc.

Tested according to ISO 7235 standard.

2 Softueret

  • 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