• 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

2 x Elta Variable Speed Drive IP66 - 0.75KW1 x Elta SLC710/4B-3AC - IP551 x CBMT/Q 150-27 1 HEATER KIT1 x Multiflow SMB650/4-1AC1 x G2 duct mounted panel filter 630mm1 x Etaline 630mm - D4 01 3 Phase1 x AW Sileo EC Plate Axial Fan - Three Phase - 1000mm1 x Gorilla HVLSX701 x Helios GX 225 WINDOW/WALL FAN, 225MM1 x NON-STD FSD-TD Fire and Smoke Damper - 230V - 210mm x 100mm1 x Elta Variable Speed Drive IP66 - 2.2KW1 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 FRQ5-4A V2 Inverter Speed Controller1 x FRQ-10A V2 Inverter Speed controller1 x FU 075 52 Frequency Inverter (IP20)1 x FU 22 25 Frequency Inverter1 x Frequency converter RUCK - FU 075 201 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x FU 15 16 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 5.5KW1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x FRQ5-10A Inverter Speed controller1 x ELTA - Three Phase Transformer 10amps1 x ELTA - Three Phase Transformer 3amps1 x Elta 10 Amp Electronic single phase speed controller.1 x FU 075 04 Frequency Inverter (IP20)1 x Frequency converter RUCK - FU 075 211 x FU 22 04 Frequency Inverter1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Circular Ceiling Diffuser - TST 1251 x Electronic extractor fan speed controller - FSC 1.51 x PCA Diffuser - PCA-3151 x Circular Ceiling Diffuser - TST 1001 x Balance S Diffuser - NO RING - 125mm1 x Circular Ceiling Diffuser - TST 2001 x EC6H - Reversible Group Fan Electronic Controller1 x Round ceiling diffuser 400mm1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Elta 2 Amp Electronic single phase speed controller.1 x Curved Blade Grille 600x600 (2way blow)1 x Elta 3 Amp Electronic single phase speed controller with TK1 x JSR 200 Painted RAL50181 x ELTA - Single Phase Transformer 8amps1 x Circular Ceiling Diffuser - TST 1601 x Elta 6 Amp Electronic single phase speed controller with TK1 x Elta 3 Amp Electronic single phase speed controller.1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x Airvent ceiling fan controller1 x ELTA - Single Phase Transformer 12amps1 x Balance S Diffuser - NO RING - 100mm1 x ELTA - Single Phase Transformer 4amps1 x Round ceiling diffuser 200mm1 x COM-31 x Round ceiling diffuser 300mm1 x EFSC-6N- Single Phase Speed Control1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Remote controller FLEX - for VEKO INT1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Helios TSW 7.5 Amp Transformer speed controller2 x Helios TSW 0.3Amp Compact Transformer speed controller1 x Transformer 5 Speed Controller - ATC1-10TK1 x Transformer 5 Speed Controller - ATC1-4TK1 x Transformer 5 Speed Controller - ATC1-8TK1 x Helios TSW 3 Amp Transformer speed controller1 x Elta 6 Amp Electronic single phase speed controller.1 x Envirovent 4 Way Remote Control Switch - SWHBKRF-4
Reviews
Duct Mounted Inline Filter - EU4
Duct Mounted Inline Filter - EU4
£ 44.99

Well made and robust, but it was not use for my application ...