• Model:DAOSL

DAOSL Back Draft Damper

£ 11.49 (excl. VAT)

£ 13.79 (inc. VAT)

DAOSL Back Draft Damper 1


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

Customers also purchased...

TD500 Mixvent - 150mm - TD500
TD500 Mixvent - 150mm - TD500
£ 182.84
View
220x90mm Rectangular to 150mm Round Adaptor
220x90mm Rectangular to 150mm Round Adaptor
£ 13.41
View
Sauna & steam 12V room fan
Sauna & steam 12V room fan
£ 69.00
View
110 x 54mm Low Profile Plastic Ducting - 2 Meter
110 x 54mm Low Profile Plastic Ducting - 2 Meter
£ 9.32
View
Shop by price
Shopping Cart
1 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x CS2 Current Switch1 x MWS 3 – Transformer Controller With Motor Protection2 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x TG-K Duct temperature sensor2 x Systemair Save Connect 2.0 Internet Module4 x Elta 6 Amp Electronic single phase speed controller with TK2 x Helios HQW-200/2 - IP551 x Elta 3 Amp Electronic single phase speed controller with TK2 x TG-K3/NTC10-01 - Duct temperature sensor2 x BEAS-control module1 x Single phase speed controller by auto-transformer - RMB 8.0 Amp2 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted1 x Transformer 5 Speed Controller - ATC1-12TK3 x Speed Controller - REB101 x MTP 10, 10K, Speed control3 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x Single phase speed controller by auto-transformer - RMB 10.0 Amp1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan1 x CBM 9-9 550w 4P VR (Open Motor)1 x EC6H - Reversible Group Fan Electronic Controller1 x Elta 6 Amp Electronic single phase speed controller.4 x Helios HQW-200/4 - IP551 x Flakt Woods ME 1.6 speed controller 6.0amp - EA9011591 x KMBI 225 Connector rectangular/circular to install on the discharge of CMT2 x Transformer (silent) speed controller - RE 1.5 Amp1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)2 x EBM-Papst D4E225-BC01-17 Double inlet2 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS2 x Elta Variable Speed Drive IP66 - 1.5KW (1ph to 3ph)2 x WS - Reversing Switch from Helios Fans2 x Multiflow SMB550/4-1AC3 x MWS 1.5 – Transformer Controller With Motor Protection2 x RD35S-4DW.6W.3L - 122297 (Three Phase)2 x Airvent ceiling fan controller1 x CFI In-line 425 - Carbon Filter1 x Duct Termination with Mesh - 100mm1 x Transformer Speed Control - RTRE- 3.0Amp2 x Vent Axia T-Series Controller2 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR2 x Transformer Speed Control - RTRE- 7.0Amp2 x Helios ESA-1 Surface mounted Speed Control 1amp3 x Elta Variable Speed Drive IP66 - 0.75KW1 x CO2 Room Sensor - CO2-R1 x Round ceiling diffuser 250mm3 x Transformer (silent) speed controller - RE 3.0 Amp1 x REE-1 Electronic Speed Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Easy-fix termination kit - High Rise Ventilator - EFT1 x CBT-100N Centrifugal1 x CBA-100 Inlet Flange for CBT-1001 x Speed Controller - REB2.5-N2 x Speed Controller - REB52 x SG-200 Fan Guard for the HQW 2002 x Helios HQW-250/4 - IP551 x CBB-60N Centrifugal1 x Envirovent G4 Filter - SL-G4/F71 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven1 x Helios HQW-630/4 - IP551 x Vent Axia ACM 125 inline mixed flow duct fan1 x PIR Sensor - PIR21 x PIR Sensor - PIR41 x TUNE-R-200-3-M1 - Control Damper1 x TUNE-R-200-3-M4 - Control Damper1 x Speed Controller - REB81 x Vent Axia ACM 150 inline mixed flow duct fan1 x Vent Axia ACM 200 inline mixed flow duct fan1 x Vent Axia ACM 100 inline mixed flow duct fan2 x MV-B Dual Switch for use with Helios HQW plate fans,1 x DEF-140T Inlet Guard for the CBT-100N1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Temperature Fan Speed Controller - ATCP4-WMS
£ 36,122.11
Best sellers
Backdraft Dampers - BDP Single Blade Regulating Dampers - SB- DAOSL Back Draft Damper S & P Backdraft Damper - MCA TUNE-R-315-3-M0 - Control Damper (NO ACTUATOR) Multileaf Volume Control Dampers - Circular Spigoted Case - MVCD Multileaf Volume Control Dampers -600/600 Rectangular Flanged Multileaf Volume Control Dampers -500/500 Rectangular Flanged
Specials
HPA Heavy Duty Flexible Ducting - HPA300-FD5
HPA Heavy Duty Flexible Ducting - HPA300-FD5
£ 29.99 now £ 15.00
Reviews
EM 250-E2M 01- Etamaster-250
EM 250-E2M 01- Etamaster-250
£ 128.80

Really well made but comes with no speed controler? ?and can...