• 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 SPI-100 C Iris damper2 x Elta Variable Speed Drive IP66 - 5.5KW1 x RD35S-4DW.6W.3L - 122297 (Three Phase)1 x Duct Termination with Mesh - 355mm1 x Biflow SB400-CON2-3 - High Temperature Bifurcated Fan3 x Elta Standard Ambient Flexible Connector - 560mm1 x Silentub - STUB 1001 x Helios TSW 1.5 Amp Transformer speed controller1 x RDH Flange - 03151 x ELTA - Three Phase Transformer 3amps1 x TUNE-R-250-3-M0 - Control Damper (NO ACTUATOR)2 x Multi Input Run On Timer - 0 - 20min - CFCU1 x KKS 100 silencer-section - For use with the MUB 100 size Fans.1 x Singleflow SSDL315-1EC1 x CBA-100 Inlet Flange for CBT-1001 x 125mm Round Connector with Damper1 x Biflow SB250-CON4-1 - High Temperature Bifurcated Fan1 x Speed Controller - REB161 x RDH Flange - 02501 x Flanged Damper 019-0560-STD1 x 220x90mm x 1m Insulated Rectangular Duct1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x ADH E0-280 Flange - 0280 ADHE/RDHE1 x 110 x 54mm Short Rectangular to Round Adaptor male1 x Twinflow STDL315-1EC1 x RD31S-4DW.6Q.AL - 121303 (Three Phase)2 x Silent 300 CZ Design PLUS Extractor Fan1 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Transformer Speed Control - RTRE- 1.5Amp1 x Biflow SB250-CON4-3 - High Temperature Bifurcated Fan1 x RUCK MTP 30, Stepped Speed control1 x Biflow SB250-CON2-3 - High Temperature Bifurcated Fan1 x Chaysol DA 9/9 3 speed1 x Chaysol da 9-7 - 3 Speed1 x AL 315 EC 01 AXIALINE - High Performance Long Cased Axial Fan1 x RD31S-4EW.6Q.AL - 122296 (Single Phase)1 x Clearflow CF Roof Mounted Vertical Discharge Centrifugal Fan - CF315/4-1AC - Single Phase1 x Universal Pipe Fixing Clip1 x GRA-100 External Grill by S&P2 x 150mm Round Connector1 x Clearflow CF Roof Mounted Vertical Discharge Centrifugal Fan - CF350/4-1AC - Single Phase1 x Flanged Damper 019-0500-STD1 x 125mm Round Connector1 x CBT-100N Centrifugal ATEX II 2G Exe II T31 x Chaysol da 9-7 - V7099331 x Envirovent Silent MV160/100S Mixvent - 100mm - (5 year warranty)2 x Elta Quietflow Twin SQT200-1ECL1 x Duct Termination with Mesh - 400mm1 x Silent 100 CZ Design 12V Ecowatt + CT-12/161 x Duct Mounted Filter Box With G2 Paper AND Metal Washable Filter - 100mm1 x 204x60mm Insulated Rectangular Horizontal 90° Bend1 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x TD EVO-100 PF ECOWATT - Environmentally Friendly Energy Efficient Inline Fan1 x Remote Timer Control - 13511 x Speed Controller - REB51 x Speed Controller - REB11 x Mini Diffuser - 100mm1 x Spiral end cap - 355mm1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x HIMF - Mixed Flow Fan 125mm Inline Fan1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt 3V (3-Speed)1 x CBM 7/7 147w 4P RE-VR1 x Ancillary Pack for SLC-900 for SLC900/4A-3AC and SLC900/8-3AC1 x DPD 12PM Delivery Surcharge
Reviews
DAOSL Back Draft Damper
DAOSL Back Draft Damper
£ 11.49

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