• 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 Transformer (silent) speed controller - RE 1.5 Amp1 x Transformer Speed Control - RTRE- 7.0Amp2 x Vent Axia T-Series Controller1 x Speed Controller - REB101 x Helios PU10 Speed Potentiometer (Flush Mounted)3 x Helios HQW-200/4 - IP551 x Airvent ceiling fan controller2 x WS - Reversing Switch from Helios Fans1 x MEV Spider Wireless boost Switch - MEV-SWH-W1 x Easy-fix termination kit - High Rise Ventilator - EFT2 x Isolator Switch - EFF-ISO3 x Transformer (silent) speed controller - RE 3.0 Amp3 x Elta Variable Speed Drive IP66 - 0.75KW1 x CBA-60 Inlet Flange for CBT-602 x Multiflow SMB550/4-1AC1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Electronic extractor fan speed controller - FSC 1.53 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x TG-K3/NTC10-01 - Duct temperature sensor1 x CBM 9-9 550w 4P VR (Open Motor)1 x Transformer Speed Control - RTRE- 1.5Amp1 x Speed Controller - REB1-N4 x SG-200 Fan Guard for the HQW 2001 x Remote Timer Control - 13512 x REB-CVF 0-10v Controller1 x MTS10- extractor fan 3 step switch1 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x EC6H - Reversible Group Fan Electronic Controller2 x MTP 10, 10K, Speed control1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3552 x TUNE-R-200-3-M1 - Control Damper4 x Vent Axia Silent 100T (TIMER)1 x REE-1 Electronic Speed Controller1 x Quietflow SQS400-1ECL - Centrifugal Box Fan1 x QPTW 250C Acoustic Twin Fan with Controller1 x TD Mixvent 800/200 EEXEIIT31 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS2 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x RDH FLEX-SQUARE - ADH/RDH 04501 x EBM-Papst D4E225-BC01-17 Double inlet1 x PIR Sensor - PIR21 x Transformer Speed Control - RTRE- 12.0Amp1 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x REE-2 Electronic Speed Controller1 x Elta Wall Cowl SWC56/631 x Speed Controller - REB11 x TG-R room temperature sensor1 x DDMP 12-12 3F 1810W M6A4 DG01 x Silent 100 Window Kit - windowS1 x Speed controller with Reverse - REB-1R1 x Elta 10 Amp Electronic single phase speed controller.1 x Compact SCD450/4-1AC1 x Helios TSW 1.5 Amp Transformer speed controller1 x Helios HQW-250/4 - IP551 x DEF-CBM-RE-7 - Protection Guard1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR
Reviews
DAOSL Back Draft Damper
DAOSL Back Draft Damper
£ 11.49

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