• 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 Single phase speed controller by auto-transformer - RMB 8.0 Amp3 x TG-K3/NTC10-01 - Duct temperature sensor5 x MWS 1.5 – Transformer Controller With Motor Protection1 x Systemair Save Connect 2.0 Internet Module2 x Transformer (silent) speed controller - RE 1.5 Amp1 x Envirovent G4 Filter - SL-G4/F71 x CMT-2 225/090 1.1KW - Single inlet centrifugal fan direct driven1 x EC-Vent Room Unit1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6305 x WS - Reversing Switch from Helios Fans4 x Helios HQW-200/4 - IP551 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection2 x EC6H - Reversible Group Fan Electronic Controller1 x EM30-24 Control Panel Commissioning Service2 x Helios HQW-630/4 - IP552 x Multiflow SMB550/4-1AC4 x Commercial Single or 3 phase Fan Reversing Switch - RS13 x Vent Axia T-Series Controller5 x Airvent ceiling fan controller3 x Transformer (silent) speed controller - RE 3.0 Amp1 x Easy-fix termination kit - High Rise Ventilator - EFT3 x Electronic extractor fan speed controller - FSC 1.54 x SG-200 Fan Guard for the HQW 2002 x REE-1 Electronic Speed Controller2 x Speed Controller - REB52 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS2 x Remote Timer Control - 13513 x Elta Variable Speed Drive IP66 - 0.75KW3 x TG-R room temperature sensor3 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)2 x MTP 10, 10K, Speed control3 x Vent Axia Silent 100T (TIMER)1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp2 x TUNE-R-200-3-M1 - Control Damper2 x Quietflow SQS400-1ECL - Centrifugal Box Fan3 x Transformer Speed Control - RTRE- 12.0Amp1 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT3 x REB-CVF 0-10v Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 3551 x CBS-60 Outlet Flange for CSB/CBT-601 x TD Mixvent 800/200 EEXEIIT32 x Isolator Switch - EFF-ISO1 x Helios PU10 Speed Potentiometer (Flush Mounted)1 x Speed Controller - REB1-N3 x Speed Controller - REB101 x Helios HQW-250/4 - IP551 x Elta Wall Cowl SWC56/632 x Elta Variable Speed Drive IP66 - 2.2KW1 x Transformer Speed Control - RTRE- 7.0Amp1 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 VR1 x RDH FLEX-SQUARE - ADH/RDH 04501 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x CBA-60 Inlet Flange for CBT-602 x EBM-Papst D4E225-BC01-17 Double inlet2 x Speed Controller - REB12 x Vent Axia ACM 200 inline mixed flow duct fan1 x LFBR 315 G4 - Helios Inline Filter Box - 315mm1 x Helios HQW-315/4 - IP551 x GRA-100 External Grill by S&P1 x Elta Louvre Shutter - 400mm1 x TUNE-R-200-3-M4 - Control Damper2 x DDMP 10-08 3F 2210W M6A4 DG0
BD7/7 centrifugal M4 0.13Kw
BD7/7 centrifugal M4 0.13Kw
£ 345.00 now £ 300.00
Reviews
DAOSL Back Draft Damper
DAOSL Back Draft Damper
£ 11.49

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