• 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

Available Options

4 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FU 15 40 Frequency Inverter1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FRQ-10A V2 Inverter Speed controller1 x FRQ5-4A V2 Inverter Speed Controller1 x Elta Variable Speed Drive IP66 - 4.0KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x FRQ5-10A Inverter Speed controller1 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x ELTA - Three Phase Transformer 3amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x ELTA - Three Phase Transformer 10amps1 x FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x NKS-D swirl diffuser v-300 x 300mm1 x Electronic extractor fan speed controller - FSC 1.51 x Circular Ceiling Diffuser - TST 1251 x Balance S Diffuser - NO RING - 125mm1 x EC6H - Reversible Group Fan Electronic Controller1 x PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 1001 x Elta 2 Amp Electronic single phase speed controller.1 x Circular Ceiling Diffuser - TST 2001 x Elta 3 Amp Electronic single phase speed controller with TK1 x Curved Blade Grille 600x600 (2way blow)1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 8amps1 x Round ceiling diffuser 400mm1 x EFSC-3N- Single Phase Speed Control1 x JSR 200 Painted RAL50181 x Airvent ceiling fan controller1 x Elta 3 Amp Electronic single phase speed controller.1 x Circular Ceiling Diffuser - TST 1601 x ELTA - Single Phase Transformer 4amps1 x AIRVENT speed control - AIR4019611 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x COM-31 x Elta Variable Speed Drive IP66 - 2.2KW1 x Elta Variable Speed Drive IP66 - 0.75KW1 x FU 22 25 Frequency Inverter1 x Frequency converter FU 075 14 - IP661 x Frequency converter RUCK - FU 075 202 x Remote controller FLEX - for VEKO INT2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan2 x Helios TSW 7.5 Amp Transformer speed controller2 x Envirovent 4 Way Remote Control Switch - SWHBKRF-42 x Transformer 5 Speed Controller - ATC1-4TK1 x Balance S Diffuser - NO RING - 100mm2 x Helios TSW 0.3Amp Compact Transformer speed controller1 x Round ceiling diffuser 200mm1 x EFSC-6N- Single Phase Speed Control2 x Transformer 5 Speed Controller - ATC1-10TK1 x Round ceiling diffuser 250mm1 x Round ceiling diffuser 300mm1 x Elta 6 Amp Electronic single phase speed controller.1 x PCA Diffuser - PCA-2501 x Helios TSW 3 Amp Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-8TK2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x ELTA - Single Phase Transformer 10amps
Reviews
DAOSL Back Draft Damper
DAOSL Back Draft Damper
£ 11.49

Look good, works well, except the shaft of the lanellae cuts...