• 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 Elta Variable Speed Drive IP66 - 1.5KW1 x Elta 2 Amp Electronic single phase speed controller.1 x DDMP 10-08 3F 2210W M6A4 DG01 x ELM 18 EX Flexible Cuff for ERM 181 x QPTW 250C Acoustic Twin Fan with Controller1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt CVR1 x CBM 9-9 550w 4P VR (Open Motor)1 x 110 x 54mm Round to Rectangular Adaptor - Long2 x Elta Variable Speed Drive IP66 - 0.75KW2 x SPI-100 C Iris damper2 x CBM Low Pressure Centrifugal Fan - CBM 12/12 6 Pole 736watt CVR1 x Biflow SB315-CON4-3 - High Temperature Bifurcated Fan1 x CBM Low Pressure Centrifugal Fan - CBM 9/7 4 Pole 373watt CVR1 x ACO8AC/EC AutoChangeover panel1 x Elta Turboflow-TF - 450mm - Single phase1 x Biflow SB250-CON4-3 - High Temperature Bifurcated Fan2 x 110 x 54mm Short Rectangular to Round Adaptor male1 x Ancillary Pack for SB-Biflow 315 model1 x CBM Low Pressure Centrifugal Fan - CBM 10/10 4 Pole 550watt VR1 x RD35S-4DW.6W.3L - 122297 (Three Phase)2 x RDH FLEX-SQUARE - ADH/RDH 04502 x EBM-Papst D4E225-BC01-17 Double inlet2 x ADH E0-450 Flange - 0450 ADHE/RDHE2 x RDH Flange - 02501 x RDH Flange - 03152 x RD31S-4EW.6Q.AL - 122296 (Single Phase)1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Silent 300 CZ Design PLUS Extractor Fan1 x DDMP 10-10 1F 1000W M6A2 DA51 x ADH E0-250 Flange - 0250 ADHE/RDHE1 x Comefri - TLZ 560 R - High Performance Scroll Fan1 x Duct Termination with Mesh - 450mm1 x RDH Flange - 04501 x RD31S-4DW.6Q.AL - 121303 (Three Phase)2 x Nicotra RDH G2E7-04502 x AEL - Outlet Flexible Connection for TLZ450 R1 x DDMP 10-08 1F 1000W M6A2 DA51 x Ancillary Pack for SLC-5601 x Elta SCP630/4-3AC - IP551 x Clearflow CFHT Kitchen/High Temp Roof Fan - CFHT560/4-3AC1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt 3V (3-Speed)1 x Round ceiling diffuser 400mm1 x 125mm Round Connector with Damper1 x Elta SLC315/4-3AC - IP551 x Bathroom Fan -Envirovent- Silent 100 T (Timer Model)2 x 220x90mm to 204x60mm Rectangular Adapter1 x 150mm Round Connector1 x Ducting 15 Degree Bend - 100mm1 x Elta SCP560/4-3AC - IP551 x Ducting 90 Degree Bend - 450mm1 x CBM Low Pressure Centrifugal Fan - CBM 9/9 4 Pole 550watt C VR1 x Potentiometer EGH 01 - for DDMP Fans1 x Universal Pipe Fixing Clip1 x Elta SLC560/4A-3AC - IP551 x Nicotra RDH E4-0450 (K)1 x Soler & Palau - Contra Rotating TCBTx2-630 - IP652 x Comefri - TLZ 450 R - High Performance Scroll Fan1 x Comefri - TLZ 225 R - High Performance Scroll Fan1 x Elta - Room Sensor - Temp/Humid/C021 x DDMP 12-12 1F 1800W M6A4 DA81 x Elta Variable Speed Drive IP66 - 7.5KW1 x Transformer Speed Control - RTRE- 5.0Amp
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
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Excellent low noise fan, I've got one unit running years and...