• 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...

TD500 Mixvent - 150mm - TD500
TD500 Mixvent - 150mm - TD500
£ 182.84
View
220x90mm Rectangular to 150mm Round Adaptor
220x90mm Rectangular to 150mm Round Adaptor
£ 13.41
View
Sauna & steam 12V room fan
Sauna & steam 12V room fan
£ 69.00
View
110 x 54mm Low Profile Plastic Ducting - 2 Meter
110 x 54mm Low Profile Plastic Ducting - 2 Meter
£ 9.32
View
Shop by price
Shopping Cart
1 x BEAS-control module1 x CBS-60 Outlet Flange for CSB/CBT-604 x WS - Reversing Switch from Helios Fans2 x MWS 1.5 – Transformer Controller With Motor Protection3 x Helios HQW-200/4 - IP554 x Transformer (silent) speed controller - RE 3.0 Amp1 x REB-CVF 0-10v Controller3 x Vent Axia T-Series Controller2 x Airvent ceiling fan controller3 x Elta Variable Speed Drive IP66 - 0.37KW (1ph to 3ph)2 x TG-K3/NTC10-01 - Duct temperature sensor1 x Envirovent G4 Filter - SL-G4/F71 x Multiflow SMB550/4-1AC2 x Commercial Single or 3 phase Fan Reversing Switch - RS13 x Electronic extractor fan speed controller - FSC 1.52 x EC6H - Reversible Group Fan Electronic Controller2 x Elta Variable Speed Drive IP66 - 0.75KW1 x FAST-TRACK RANGE 75mm - Click Ring (1 bag of 10)3 x MTP 10, 10K, Speed control1 x Remote Timer Control - 13513 x Speed Controller - REB52 x TG-R room temperature sensor3 x SG-200 Fan Guard for the HQW 2002 x REE-1 Electronic Speed Controller1 x Helios HQW-630/4 - IP552 x Skyflow SSR Horizontal Roof Cowl SSR31/35BS1 x HCFC 1.7 - Reversible Speed Controller for HCF sweep fans1 x Single phase speed controller by auto-transformer - RMB 1.5 Amp1 x Isolator Switch - EFF-ISO1 x S&P MULTI-REG EC FAN CONTROLLER / INTERFACE2 x Vent Axia Silent 100T (TIMER)1 x Helios TSW 1.5 Amp Transformer speed controller1 x RDH FLEX-SQUARE - ADH/RDH 04501 x TUNE-R-200-3-M1 - Control Damper1 x Transformer Speed Control - RTRE- 1.5Amp1 x Elta Variable Speed Drive IP66 - 2.2KW1 x Vent Axia ACM 200 inline mixed flow duct fan1 x Transformer Speed Control - RTRE- 12.0Amp1 x Speed Controller - REB1
£ 14,953.29
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
CMT-2 120/50 - 0,09Kw - LG270 Single inlet centrifugal fan direct driven
CMT-2 120/50 - 0,09Kw - LG270 Single inlet centrifugal fan direct driven
£ 494.68 now £ 424.00
Reviews
Circular Inline Silencers - 0.6M long - SLU-600
Circular Inline Silencers - 0.6M long - SLU-600
£ 58.40

I have a loft mount extractor fan which was very noisy. I ...