• Model:DAOSL

DAOSL Back Draft Damper

£ 11.49 (excl. VAT)

£ 13.79 (inc. VAT)

DAOSL Back Draft Damper 1


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

Customers also purchased...

110 x 54mm Low Profile Plastic Ducting - 2 Meter
110 x 54mm Low Profile Plastic Ducting - 2 Meter
£ 9.32
View
110 x 54mm Flat Channel Connector
110 x 54mm Flat Channel Connector
£ 2.33
View
110 x 54mm Horizontal 90 Degree Bend
110 x 54mm Horizontal 90 Degree Bend
£ 3.03
View
110 x 54mm Short Rectangular to Round Adaptor male
110 x 54mm Short Rectangular to Round Adaptor male
£ 2.92
View
Shop by price
Shopping Cart
1 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x 204x60mm Rectangular to 125mm Round Adaptor1 x Metal Inline Fan - VENT-200NK1 x Ducting 45 Degree Bend - 355mm1 x Helios DDF-200 Roof Cowl1 x EM 200-E2M 01- Etamaster-2001 x TXTR/4-630 C Sickle Bladed Cased Axial Fan - 630mm1 x HRFD 400/4 Cased Axial Fan 400mm - 3 Phase2 x Elta Variable Speed Drive IP66 - 2.2KW1 x FU 15 40 Frequency Inverter1 x Elta Variable Speed Drive IP66 - 7.5KW1 x FRQ-10A V2 Inverter Speed controller1 x Helios TSD 3.0 Transformer Speed Control (400v)1 x FRQ5-4A V2 Inverter Speed Controller1 x FU 075 52 Frequency Inverter (IP20)1 x FU 22 25 Frequency Inverter2 x Elta Variable Speed Drive IP66 - 0.75KW1 x Elta Variable Speed Drive IP66 - 4.0KW1 x Frequency converter FU 075 14 - IP661 x FU 15 16 Frequency Inverter1 x FRQ5-10A Inverter Speed controller1 x Elta Variable Speed Drive IP66 - 1.5KW1 x Elta Variable Speed Drive IP66 - 2.2KW (1ph to 3ph)1 x Elta 10 Amp Electronic single phase speed controller.1 x FU 075 04 Frequency Inverter (IP20)1 x Helios - FIUK-11KW 24.0A - FREQUENCY INVERTER1 x ELTA - Three Phase Transformer 10amps1 x ATEX rated 3-phase Speed Control - R-DK4 KT (EX)1 x ELTA - Three Phase Transformer 3amps1 x FU 22 04 Frequency Inverter1 x Frequency converter RUCK - FU 075 211 x ELTA - Single Phase Transformer 2amps1 x NKS-D swirl diffuser v-300 x 300mm1 x Electronic extractor fan speed controller - FSC 1.51 x Circular Ceiling Diffuser - TST 1251 x Balance S Diffuser - NO RING - 125mm2 x EC6H - Reversible Group Fan Electronic Controller1 x Circular Ceiling Diffuser - TST 1001 x PCA Diffuser - PCA-3151 x Elta 2 Amp Electronic single phase speed controller.3 x Elta 3 Amp Electronic single phase speed controller with TK1 x 5-Speed Controller for use with Elta SAX Classic Fans1 x Circular Ceiling Diffuser - TST 2001 x Curved Blade Grille 600x600 (2way blow)1 x Round ceiling diffuser 400mm1 x ELTA - Single Phase Transformer 16amps1 x ELTA - Single Phase Transformer 8amps2 x Airvent ceiling fan controller1 x Elta 3 Amp Electronic single phase speed controller.1 x JSR 200 Painted RAL50181 x EFSC-3N- Single Phase Speed Control4 x Elta 6 Amp Electronic single phase speed controller with TK1 x Circular Ceiling Diffuser - TST 1601 x ELTA - Single Phase Transformer 12amps4 x COM-31 x ELTA - Single Phase Transformer 4amps1 x AIRVENT speed control - AIR4019611 x Balance S Diffuser - NO RING - 100mm1 x Round ceiling diffuser 200mm1 x EFSC-6N- Single Phase Speed Control1 x Round ceiling diffuser 300mm1 x Elta 6 Amp Electronic single phase speed controller.1 x Round ceiling diffuser 250mm1 x PCA Diffuser - PCA-2501 x ELTA - Single Phase Transformer 10amps1 x Round ceiling diffuser 350mm1 x Run On Timer - 5s - 4hrs - RT5A1 x Remote Timer Control - 13513 x Push Timer Switch - ZA41 x Helios ZNE Electronic Fan Overrun Timer1 x Time Delay Unit - DT20B3 x Multi Input Run On Timer - 0 - 20min - CFCU4 x Helios TSW MCB Amp Transformer speed controller1 x 7 Day Programmable TIMECLOCK1 x Temperature Fan Speed Controller - ATCP4-WMS4 x Vent Axia ACM 100 T (Timer Model) inline mixed flow duct fan2 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans2 x Remote controller FLEX - for VEKO INT2 x Vent Axia ACM 150 inline mixed flow duct fan2 x Transformer 5 Speed Controller - ATC1-4TK2 x Transformer 5 Speed Controller - ATC1-8TK2 x Transformer 5 Speed Controller - ATC1-10TK2 x Helios TSW 7.5 Amp Transformer speed controller4 x Vent Axia ACM 125 T (Timer Model) inline mixed flow duct fan3 x Helios TSW 3 Amp Transformer speed controller2 x Helios TSW 0.3Amp Compact Transformer speed controller3 x Three Phase Transformer controllers - RMT 1.5 Amp5 x Vent Axia ACM 125 inline mixed flow duct fan2 x Envirovent Silent MV160/100T Mixvent - Timer Model - 100mm - (5 year warranty)1 x Vent Axia ACM 100 inline mixed flow duct fan1 x TTC-2000 Three phase electric heater controller3 x CS2 Current Switch2 x Helios TSW 1.5 Amp Transformer speed controller1 x ACO8AC/EC AutoChangeover panel1 x ACOAS/ AC/EC Auto Changeover 8Amp1 x TG-K Duct temperature sensor1 x Elta ACO Panel 149-ACO14E2 x Single phase speed controller by auto-transformer - RMB 3.5 Amp1 x CONTROL ECOWATT - Basic2 x Transformer 5 Speed Controller - ATC1-12TK4 x Single phase speed controller by auto-transformer - RMB 1.5 Amp5 x MV-B Dual Switch for use with Helios HQW plate fans,1 x EC-Vent control board1 x EM30-24 Electro-Mechanical Control Panel1 x BEAS-control module1 x Helios HQW-200/2 - IP551 x ACO 149-ACO1/EDV3 x Systemair Save Connect 2.0 Internet Module1 x CPTA-S PIR SENSOR Volt Free Contacts - Surface Mounted2 x Single phase speed controller by auto-transformer - RMB 8.0 Amp1 x Elta ACO Panel 149-ACO18B1 x Envirovent G4 Filter - SL-G4/F74 x MWS 1.5 – Transformer Controller With Motor Protection4 x WS - Reversing Switch from Helios Fans2 x Envirovent 4 Way Remote Control Switch - SWHBKRF-41 x EC-Vent Room Unit2 x TG-K3/NTC10-01 - Duct temperature sensor2 x MWS 3 – Transformer Controller With Motor Protection1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 6303 x Isolator Switch - ISOSW1 x U-EK plastic housing IP65 - for use with the U-EK230E Motor Protection1 x Helios HQW-630/4 - IP551 x Multiflow SMB550/4-1AC2 x Transformer (silent) speed controller - RE 3.0 Amp1 x EM30-24 Control Panel Commissioning Service3 x Helios HQW-200/4 - IP552 x Helios TSW 10 Amp Transformer speed controller2 x Commercial Single or 3 phase Fan Reversing Switch - RS11 x Vent Axia T-Series Controller1 x S & P Aluminium Axial Fan Louvre Shutter - PER-CR- 5001 x Easy-fix termination kit - High Rise Ventilator - EFT1 x TG-R room temperature sensor1 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)1 x REE-1 Electronic Speed Controller1 x SG-200 Fan Guard for the HQW 200
£ 62,529.95
Best sellers
Backdraft Dampers - BDP Single Blade Regulating Dampers - SB- DAOSL Back Draft Damper S & P Backdraft Damper - MCA TUNE-R-315-3-M0 - Control Damper (NO ACTUATOR) Multileaf Volume Control Dampers - Circular Spigoted Case - MVCD Multileaf Volume Control Dampers -600/600 Rectangular Flanged Multileaf Volume Control Dampers -500/500 Rectangular Flanged
Specials
Fresh Air control carbon filter - 125mm
Fresh Air control carbon filter - 125mm
£ 49.99 now £ 39.99
Reviews
Soler & Palau TCBB/4-450/H - IP65
Soler & Palau TCBB/4-450/H - IP65
£ 505.88

Delivered super promptly yesterday, next day. Only just fitt...