• Model:DAOSL

DAOSL Back Draft Damper

£ 11.49 (excl. VAT)

£ 13.79 (inc. VAT)



The DAOSL back draft damper has aluminium lamellae which open during the air flow in one direction and close when the fan motor is inactive. When no air is flowing, the lamellae are maintained in a vertical position using a spring. The damper is supplied with double EPDM gasket.

Available sizes - 100m, 125mm, 150mm, 200mm, 250mm, 315mm,

Please select below..

Look good, works well, except the shaft of the lanellae cuts into the tube or pipe. Had to shorten mine to get it in. The shaft should not be longer that the seals diameter.

Rated by Trevor

Thank you for the review. The shaft length is not normally a problem because they are normally used to join two lengths of ducting and are not designed to be fully inserted, although it is interesting you have managed it! Be aware any extra friction on the shaft will affect its operation.
- Admin

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2.2KW (1ph to 3ph)1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x FU 075 04 Frequency Inverter (IP20)1 x FU 22 04 Frequency Inverter1 x ELTA - Three Phase Transformer 3amps1 x ELTA - Three Phase Transformer 10amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER3 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Transformer 5 Speed Controller - ATC1-4TK2 x Vent Axia ACM 150 inline mixed flow duct fan2 x Transformer 5 Speed Controller - ATC1-8TK1 x Transformer 5 Speed Controller - ATC1-10TK2 x Helios TSW 1.5 Amp Transformer speed controller2 x Vent Axia ACM 100 inline mixed flow duct fan3 x Helios TSW 3 Amp Transformer speed controller2 x CS2 Current Switch1 x Remote Timer Control - 13511 x Isolator Switch - ISOSW1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x MWS 3 – Transformer Controller With Motor Protection1 x MWS 1.5 – Transformer Controller With Motor Protection2 x WS - 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