• 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 Amp2 x Airvent ceiling fan controller1 x TD Mixvent 800/200 EEXEIIT31 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6302 x WS - Reversing Switch from Helios Fans1 x MTS10- extractor fan 3 step switch1 x CBA-60 Inlet Flange for CBT-601 x MWS 1.5 – Transformer Controller With Motor Protection1 x Helios HQW-250/4 - IP551 x EM30-24 Control Panel Commissioning Service1 x Helios HQW-630/4 - IP551 x QPTW 250C Acoustic Twin Fan with Controller1 x EBM-Papst D4E225-BC01-17 Double inlet2 x Vent Axia T-Series Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5002 x Helios HQW-200/4 - IP553 x Transformer (silent) speed controller - RE 3.0 Amp1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x TG-K3/NTC10-01 - Duct temperature sensor1 x Easy-fix termination kit - High Rise Ventilator - EFT1 x Speed Controller - REB81 x LFBR 315 G4 - Helios Inline Filter Box - 315mm1 x TG-K Duct temperature sensor1 x Elta 6 Amp Electronic single phase speed controller.1 x Quietflow SQS100-1ECL - Centrifugal Box Fan1 x VTR 300 STD Filter Kit1 x Remote Timer Control - 13511 x ENV 100 12v transformer SELV1 x Speed Controller - REB51 x EC6H - Reversible Group Fan Electronic Controller3 x Electronic extractor fan speed controller - FSC 1.51 x Elta - Room Sensor - Temp/Humid/C021 x SG-200 Fan Guard for the HQW 2001 x Compact SCD450/4-1AC1 x Speed Controller - REB2.5-N1 x DEF-CBM-RE-7 - Protection Guard1 x Elta Variable Speed Drive IP66 - 1.5KW1 x REE-1 Electronic Speed Controller1 x TG-R room temperature sensor2 x MTP 10, 10K, Speed control1 x GXC6EC - High Performance Extract Fan1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x TUNE-R-200-3-M4 - Control Damper1 x Mini Diffuser - 100mm2 x Elta Variable Speed Drive IP66 - 0.75KW1 x CK-60F Kit1 x Quietflow SQS400-1ECL - Centrifugal Box Fan1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x Three Phase 3 step - 10amp Transformer controller for use with the HV Wall Mounted fans.2 x Vent Axia Silent 100T (TIMER)1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Elta 3 Amp Electronic single phase speed controller with TK1 x Comefri - TLZ 450 R - High Performance Scroll Fan1 x SPI-100 C Iris damper1 x Flat Roof Terminal -OFT 5 - Asphalt1 x HIMF - Mixed Flow Fan 125mm Inline Fan1 x CBT-100N Centrifugal1 x DA9/9-NT1 x Isolator Switch - EFF-ISO1 x Elta Variable Speed Drive IP66 - 2.2KW1 x CBA-100 Inlet Flange for CBT-1001 x TUNE-R-200-3-M1 - Control Damper1 x Duct Termination with Mesh - 450mm1 x SAVE VSR 300 heat recovery unit
Reviews
Transformer (silent) speed controller - RE 1.5 Amp
Transformer (silent) speed controller - RE 1.5 Amp
£ 132.29

Unbelievable! With TDmixvent500: noise reduction minimum 50%...