• 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 Soler & Palau TCBB/6-355/H - IP541 x Helios HRFD 355/2 TK1 x Soler & Palau TCBT/6-355/H - IP541 x Helios VARD 355/2/2-TK1 x Raptor SDA350/4-1AC1 x Soler & Palau TCBB/4-355/H - IP541 x SABRE Cased Axial Fan (Single Phase) -VSC35514A1 x Raptor SDA350/4-1EC1 x Elta SLC355-1EC -IE5 Motor- IP551 x CRBB/4-355/112D PRMI 230v1 x AMD 355/2/2 High Pressure Long Cased Axial Fan1 x AL 355 D2 01 - High Performance Long Cased Axial Fan1 x Soler & Palau TCBT/4-355/H - IP541 x 35 MAXFAN Compac - EJ353266 - 355mm Fan and Inverter Kit 1PH to 3PH1 x Helios HRFW 355/4 TK1 x Elta SLC355/4-3AC - IP551 x Quietflow SQS100-1ECL - Centrifugal Box Fan1 x Flakt Woods ME 1.1 speed controller 1amp - EA9011571 x Elta SCP500/4-1AC - IP551 x Acoustic Box Fans (Inline) - CAB-355 RE1 x Elta 10 Amp Electronic single phase speed controller.3 x Electronic extractor fan speed controller - FSC 1.51 x ELTA - Single Phase Transformer 2amps1 x Elta 2 Amp Electronic single phase speed controller.1 x AIRVENT speed control - AIR4019611 x COM-31 x Elta 6 Amp Electronic single phase speed controller.1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x RTRD - Three Phase Speed Controller - 2 Amp1 x Speed Controller - REB31 x Vent Axia ACM 150 T (Timer Model) inline mixed flow duct fan2 x Remote controller FLEX - for VEKO INT1 x Transformer 5 Speed Controller - ATC1-2TK3 x Helios TSW 7.5 Amp Transformer speed controller2 x Transformer 5 Speed Controller - ATC1-4TK2 x Transformer 5 Speed Controller - ATC1-8TK1 x Vent Axia ACM 100 inline mixed flow duct fan2 x Helios TSW 1.5 Amp Transformer speed controller1 x RTRD - Three Phase Speed Controller - 4 Amp1 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x Vent Axia ACM 150 inline mixed flow duct fan1 x RDS 7 Helios Transformer Controller With Motor Protection3 x Vent Axia ACM 125 inline mixed flow duct fan1 x MV-B Dual Switch for use with Helios HQW plate fans,2 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Transformer 5 Speed Controller - ATC1-10TK2 x Helios TSW 3 Amp Transformer speed controller1 x CS2 Current Switch1 x DEF-140T Inlet Guard for the CBT-100N3 x MWS 3 – Transformer Controller With Motor Protection2 x Insulated extract Plenum 8+12 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Single phase speed controller by auto-transformer - RMB 10.0 Amp2 x Helios TSW 0.3Amp Compact Transformer speed controller2 x Insulated extract Plenum 6+11 x CMT-2 200/80 1.1KW - Single inlet centrifugal fan direct driven3 x Elta 6 Amp Electronic single phase speed controller with TK2 x Helios HQW-200/2 - IP552 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x 7 Day Programmable TIMECLOCK1 x KMBI 180 Connector rectangular/circular to install on the discharge of CMT2 x MWS 1.5 – Transformer Controller With Motor Protection1 x FAST-TRACK RANGE 90mm - Adaptor For Distribution Box1 x Two Speed Switch - REGUL-21 x ERR 20/1 Centrifugal inline fan3 x WS - Reversing Switch from Helios Fans2 x EC6H - Reversible Group Fan Electronic Controller2 x Helios HQW-630/4 - IP551 x Vent Axia T-Series Controller1 x CBS-60 Outlet Flange for CSB/CBT-602 x REE-1 Electronic Speed Controller1 x ERR 31/1 Centrifugal inline fan3 x Transformer (silent) speed controller - RE 3.0 Amp1 x FAST-TRACK RANGE 90mm - Click Ring (1 bag of 10)1 x Airvent ceiling fan controller1 x Helios HQW-200/4 - IP552 x Multiflow SMB550/4-1AC1 x Transformer (silent) speed controller - RE 1.5 Amp1 x Remote Timer Control - 13511 x Transformer Speed Control - RTRE- 12.0Amp2 x Speed Controller - REB51 x Skyflow SSR Horizontal Roof Cowl SSR31/35B1 x Multi Input Run On Timer - 0 - 20min - CFCU1 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x Temperature Fan Speed Controller - ATCP4-WMS1 x Push Timer Switch - ZA42 x Helios TSW MCB Amp Transformer speed controller1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp2 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS2 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)1 x Commercial Single or 3 phase Fan Reversing Switch - RS1
Reviews
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