• Model:DAOSL

DAOSL Back Draft Damper

£ 10.53 (excl. VAT)

£ 12.64 (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 and 125mm, Please select above..
NB. 100mm and 150mm out of stock until mid February. Try the BDP

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

1 x JETLINE-150 - In Line Centrifugal Duct Fan1 x Ancillary Pack for SB-Biflow 400 model1 x CBMT/Q 315-54 1 HEATER KIT1 x Blast Gate (Manual) 100mm1 x Soler & Palau - HCBT/4-450/H - IP651 x ILHT-560/MV - Inlet & Outlet Mounting Flange Kit1 x Impeller Side Guard - 250mm1 x DEF-800AN1 x Airbrick Grille with flange - 204 x 60mm1 x 125mm Round Connector1 x CBM 9/9 4 Pole 550watt C VR-( Three Phase) CLEARANCE ITEM1 x EuroSeries (ESP) - Plate Mounted Axial Fans 315-121 x AKOR Spare Filter2 x Helios GigaBox 450mm GBD 450/4/4 centrifugal1 x Purlin Box 300/315 for RAW Cowls1 x SD-MUB Vibration pad set1 x 100mm Wall Duct - 350mm1 x Belt Drive Cased Axial Fan - 710mm - H version1 x Etaline 315mm - E2 03 (Low Power Version)1 x Onda Cristal 900 Kitchen Extractor Hood1 x 125mm - 100mm Round Reducer1 x MFA-AR/AXC 315 mounting foot1 x JAE- 630 Flexible Coupling for CRHB/CRHT Roof Fans1 x Etaline 150mm - EL 150L E2 011 x Soler & Palau TCBT/6-710/H - IP651 x 2mtr Round Ducting - 100mm1 x Soler & Palau - HCBT/6-355/H - IP651 x CC-710-2.2kw1 x Purlin Box 400/450 for RAW Cowls1 x AKOR GD - Spare Motor1 x Access Door for Circular Duct - 400 x 300 - SIZE 501 x Helios DDF-315 Roof Cowl1 x Elta Wall Cowl SWC45/501 x Belt Drive Cased Axial Fan - 630mm - L version1 x Soler & Palau TCBB/4-630/L - IP651 x Duct Mounted Filter Box - G4 Grade Panel - 450mm1 x Prio 150E2 circular duct fan1 x Bifurcated Fan - TET 4/6001 x Soler & Palau TCBB/4-560/L - IP651 x FSAF1000C1DA SILENCER 1070/161 x 204x60mm Flat Channel Connector1 x Duct Clamps box of 50 - 60mm - 270mm1 x Duct Humidistat - HS4_hdt1 x Clearflow CF Roof Mounted Vertical Discharge Centrifugal Fan - CF350/4-1AC - Single Phase1 x Vent Axia KAF Kitchen Extract Fan - 560mm - 2 Pole - Three Phase1 x Elta SPA450/46-3AC - IP541 x Soler & Palau TCBB/6-500/H - IP651 x Elta SPA250/2-1AC - IP441 x Elta Variable Speed Drive IP66 - 2.2KW1 x Vent Axia KAF Kitchen Extract Fan - 560mm - 2 Pole - Single Phase1 x EQ641406 630mm Max Fan1 x Clearflow CF Roof Mounted Vertical Discharge Centrifugal Fan - CF400/4-3AC - Three Phase1 x Plastic Kitchen Extractors - CK25N1 x Rotorex HXTR Sickle Bladed Plate Axial Fan - 6 Pole - Three Phase - 710mm1 x Traditional T-Series Window Fan - TX6WW1 x DEF-1000-AN1 x Elta Variable Speed Drive IP66 - 4.0KW1 x Soler & Palau HXM-200mm1 x CBT-80N Centrifugal1 x Elta SCP450-1EC - IP551 x Access Door for Circular Duct - 250 x 150 - SIZE 251 x Duct Mounted Filter Box With G2 Paper AND Metal Washable Filter- 450mm1 x 125mm Round Connector with Damper1 x Mounting Feet (pair) for SB-CON 2501 x 150mm Round Connector with Damper1 x CBT-130N Centrifugal ATEX II 2G Exe II T31 x Kitchen Grease Filter - Mesh Type Non standard 450mm x 150mm x 22mm ( CEF450 Replacement)1 x AM pallet Delivery Surcharge1 x CK-60F Kit1 x Woods JM long cased aerofoil 63JM/20/4/6/32/3PH1 x Etaline 400mm D2-01 3-phase1 x SS Series Slimseal 800mmx800mm Damper1 x Metal Inline Fan - VENT-250NK1 x SG AW-710 BGr , RAL 90051 x Belt Drive Cased Axial Fan - 710mm - L version1 x Inclined Curb support BI-3 for TH-5001 x Clearflow CF Roof Mounted Vertical Discharge Centrifugal Fan - CF350/4-3AC - Three Phase1 x CBM 7/7 4p 300W RE-VR1 x Elta Variable Speed Drive IP66 - 1.5KW1 x HCFT/4-800mm plastic impeller plate fan1 x Soler & Palau TCBT/4-630/H - IP651 x GENIOX 11 Roof Mounted External Unit1 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x Acopel F400-355/1601 x Elta SLC315-1EC -IE5 Motor- IP551 x Kitchen Grille with Grease Filter - 300x300 - NO GRILLE BOX1 x 316 grade Stainless Steel Jet Cowl Ventilation Outlet - 400mm1 x Etaline 400mm1 x Dynair QCL 200mm (2-Pole)1 x DA 10/8 4-Pole 550watt 3-Speed1 x CBS-80 Outlet Flange for CBT-801 x Systemair ZAP- 4pole - Three phase -450mm - IP541 x Elta SLC710/4B-3AC - IP551 x EM 250-E2M 01- Etamaster-2501 x Belt Drive Cased Axial Fan - 560mm - H version
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