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Extractor Fan 100mm In-line Back Draught for 4 Inch Ducting

by Manrose

Original price £12.34 - Original price £12.34
Original price
£12.34 - £12.34
Current price £12.34

Product Description



Back Draught Shutter Vent


For 4 Inch  (100mm) Extractor Fan Ducting



In-line spring operated back draught shutter.

Stops back draught and wind noise when a fan is switched off.

Made from tough, white GRP plastic.

Fits Inside standard size 100mm diameter ducting.

Fit the shutter with the centre spindle of the flaps in a vertical position and make sure ducting is level.

Other ducting products availabe in our shop.


Please note that these shutters have 1 spring and not 2.

This is correct as 2 springs would offer too much resistance.


ABS thermoplastic.

Complies with Part F building regulations.

Suitable for commercial and domestic use.