• Suitable to reduce noise level in air-conditioning or ventilation systems, in commercial or industrial applications.
• Structure made from galvanised sheet steel, with highly absorbent sound attenuating lining between the outer and inner perforated steel casing.
• Thickness of the absorbent sound attenuating lining:
– 50mm up to 400mm size.
– 75mm from 450mm size.
• Available in two models:
– DENP without pod, with differing lengths: 1D = 1 time diameter, 2D = 2 times diameter.
– DEP with pod, with differing lengths: 1D = 1 time diameter, 2D = 2 times diameter.
• Internal pod made from perforated steel with a sound absorbent infill. The velocity should not exceed 15m/s.
• Melinex version suitable to prevent grease impregnation into the acoustic media, available on standard models, only.
• For bolting directly to fan flange or to flanged circular ducts.