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In-frame ventilators Air intake silencers
TH - Silencers for tunnel adapters

TH - Silencers for tunnel adapters

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Description Packg. * Code
Tunnel silencers TH 1000, L =1000 mm 1 0268
Tunnel silencers TH 460, L =460 mm 1 0265
Tunnel silencers TH 600, L =600 mm 1 0266
Tunnel silencers TH 800, L =800 mm 1 0267
* packaged quantities are shown for information purposes – All items can be ordered singly
Tunnel silencers TH 1000, L =1000 mm




The TH silencer made from galvanized steel with 12mm thickness of acoustic lagging is surface mounted inside a roller shutter box. It comes in lengths of 460, 600, 800, and 1000mm.

The silencer is fitted inside a roller shutter box and held in place by screws.

Make sure the vertical ends of the silencer are free of obstruction to allow sufficient air through (minimum clearance 30mm either side).

After making a 250 x 15mm cut-out, perfectly concentric with the silencer, fit the VMG-30 self-regulating air inlet onto the outside face of the roller shutter box.

CSTB test report 29316*
Acoustic insulation

Type Dn,e,w (C) Dn,e,w (C)
*ASPISON 41 + VM-G 30 41 dB 41 dB
*TH 460 42 dB 41 dB
*TH 600 44 dB 42 dB
TH 800 45 dB 43 dB
TH 1000 56 dB 44 dB