• 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

2 x Vent Axia ACM 125 inline mixed flow duct fan1 x Helios TSW MCB Amp Transformer speed controller3 x Push Timer Switch - ZA42 x Three Phase Transformer controllers - RMT 1.5 Amp1 x Run On Timer - 5s - 4hrs - RT5A1 x Remote Timer Control - 13512 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Temperature Fan Speed Controller - ATCP4-WMS1 x Vent Axia ACM 150 inline mixed flow duct fan2 x Helios TSW 1.5 Amp Transformer speed controller3 x CS2 Current Switch2 x MV-B Dual Switch for use with Helios HQW plate fans,1 x Helios ZNE Electronic Fan Overrun Timer2 x COM-33 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Time Delay Unit - DT20B1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x TTC-2000 Three phase electric heater controller2 x Isolator Switch - ISOSW1 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x 7 Day Programmable TIMECLOCK1 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Elta ACO Panel 149-ACO14E1 x CONTROL ECOWATT - Basic2 x WS - Reversing Switch from Helios Fans1 x EM30-24 Electro-Mechanical Control Panel1 x TG-K3/NTC10-01 - Duct temperature sensor1 x MWS 3 – Transformer Controller With Motor Protection2 x Commercial Single or 3 phase Fan Reversing Switch - RS13 x Elta 6 Amp Electronic single phase speed controller with TK1 x Systemair Save Connect 2.0 Internet Module2 x TG-R room temperature sensor1 x EC6H - Reversible Group Fan Electronic Controller1 x Helios HQW-200/2 - IP551 x EC-Vent Room Unit1 x Elta Variable Speed Drive IP66 - 2.2KW1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x EM30-24 Control Panel Commissioning Service1 x PIR Sensor - PIR23 x Elta Variable Speed Drive IP66 - 0.75KW2 x MWS 1.5 – Transformer Controller With Motor Protection1 x Transformer Speed Control - RTRE- 12.0Amp1 x Vent Axia T-Series Controller1 x BEAS-control module1 x ACO 149-ACO1/EDV1 x Elta ACO Panel 149-ACO18B1 x TG-K Duct temperature sensor1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Vent Axia ACM 200 inline mixed flow duct fan1 x Transformer 5 Speed Controller - ATC1-12TK
Reviews
TD-SILENT 350/125
TD-SILENT 350/125
£ 178.68

Excellent low noise fan, I've got one unit running years and...