Tubular sound absorber

RSR 28/50

Discontinued product
Article number: 0092.0328
Manufacturer: MAICO
Tubular sound absorber with 50 mm sound absorbing cover, length: 1,000 mm, DN 280
Application examples: Showroom, Restaurant, Theatre, Production site, Industrial building
RSR 28/50 IM0009712.PNG Tubular sound absorber with 50 mm sound absorbing cover, length: 1,000 mm, DN 280

Characteristic curve

RSR 28/50 - Characteristic curve Pressure losses

  1. Pressure loss in Pa/m sound absorber
  2. Duct diameter
  3. Velocity of flow

Dimensioned drawing

RSR 28/50 - Dimensioned drawing [mm]

A: 280 mm
B: 400 mm
C: 1.170 mm
D: 279,5 mm
E: 413,5 mm

Technical data

RSR 28/50 - Technical data

Article RSR 28/50
Model 50 mm sound absorbing cover
Material Aluminium
Weight 4 kg
Nominal size 280 mm
Width 413,5 mm
Height 413,5 mm
Depth 1.170 mm
Insertion loss at 63 kHz 2 dB
Insertion loss at 125 kHz 4 dB
Insertion loss at 250 kHz 8 dB
Insertion loss at 500 kHz 16 dB
Insertion loss at 1 kHz 33 dB
Insertion loss at 2 kHz 15 dB
Insertion loss at 4 kHz 11 dB
Insertion loss at 8 kHz 12 dB
Sound insulation yes
Packing unit 1 piece
Range C
GTIN (EAN) 4012799923282
Article number 0092.0328

Accessories of

RSR 28/50 - Accessories of

is a general accessory of

Product type Name Art. No. Price*(EUR) Action
Semi-centrifugal duct fan ERM 28 No longer available for delivery 0080.0206 on request
  • On the notes

Product description


RSR 28/50

short description

Tubular sound absorber with 50 mm sound absorbing cover, length: 1,000 mm, DN 280

Product description

  • Tubular sound absorber for ventilation systems.
  • With sound absorbing cover made from fibre glass bound with artificial resin.
  • Non-combustible in accordance with DIN 4102 class A1 (building material classification).
  • Insertion loss measured in accordance with DIN 45646.
  • RSR...: With 25 mm thick sound absorbing cover.
  • RSR.../50: With 50 mm thick sound absorbing cover.

Table of contents

Wiring diagram

RSR 28/50 - Wiring diagram

Predecessor - successor

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