• 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

1 x MV-B Dual Switch for use with Helios HQW plate fans,2 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven1 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Transformer (silent) speed controller - RE 5.0 Amp2 x Transformer Speed Control - RTRE- 7.0Amp3 x Helios HQW-315/4 - IP552 x Helios PU10 Speed Potentiometer (Flush Mounted)1 x Speed Controller - REB52 x Elta Variable Speed Drive IP66 - 0.75KW1 x Elta Wall Cowl SWC35/402 x Isolator Switch - EFF-ISO2 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS4 x Transformer Speed Control - RTRE- 1.5Amp1 x CBA-60 Inlet Flange for CBT-602 x Speed Controller - REB101 x GRA-100 External Grill by S&P2 x SG-200 Fan Guard for the HQW 2001 x CBM 9-9 550w 4P VR (Open Motor)2 x MTS10- extractor fan 3 step switch3 x REB-CVF 0-10v Controller3 x Speed Controller - REB1-N1 x Elta Wall Cowl SWC25/312 x Quietflow SQS400-1ECL - Centrifugal Box Fan3 x Elta Variable Speed Drive IP66 - 2.2KW5 x MTP 10, 10K, Speed control1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)3 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR4 x Vent Axia Silent 100T (TIMER)5 x QPTW 250C Acoustic Twin Fan with Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 7104 x Helios HQW-250/4 - IP555 x Speed Controller - REB11 x Silent 100 Window Kit - windowS4 x PIR Sensor - PIR21 x DEF-CBM-RE-7 - Protection Guard1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x Jet Cowl - 315mm1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)2 x EBM-Papst D4E225-BC01-17 Double inlet1 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x TD Mixvent 800/200 EEXEIIT31 x Elta 6 Amp Electronic single phase speed controller.1 x UB47- Universal Insulated Terminal2 x PIR Sensor - PIR41 x MEV Spider Wireless boost Switch - MEV-SWH-W2 x Elta 10 Amp Electronic single phase speed controller.1 x RDH FLEX-SQUARE - ADH/RDH 04501 x REE-2 Electronic Speed Controller1 x FRQ5-10A Inverter Speed controller1 x DDMP 12-12 3F 1810W M6A4 DG01 x Compact SCD450/4-1AC1 x CBT-100N Centrifugal1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan2 x EBM-Papst D3G133-BF05-14 Double inlet1 x Three Phase 3 step - 10amp Transformer controller for use with the HV Wall Mounted fans.1 x Vent Axia SC5001 - Speed controller1 x Airvent ceiling fan controller1 x Contactor Interface Station - CI91 x Speed controller with Reverse - REB-1R
Reviews
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TD-SILENT 350/125
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