Safe metal ducting contains rubber seals while standard metal ducting does not.
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Bathroom zones are just a way of telling which extractor fan you can install in a specific place.
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Please Note: Ducting tubes over 200mm in diameter and 3 metres in length may incur additional shipping charges.
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SYSTEM 125 ROUND CONNECTOR WITH BACKDRAUGHT SHUTTER / DAMPER
The 125mm diameter Round Connector With Damper is manufactured from (white) High Impact Polystyrene and has a minimum free area of 11,500mm² and has male fittings for connection inside of the duct.
The DUCVKC353 is compliant with SAP Appendix Q Product Characteristics Database recommendations for duct sizes used with both extract and Mechanical Heat Recovery Systems.
DUCVKC353 is manufactured in compliance with Domestic Plastic Ductwork Specification DW/154 and does meet UL94HB flammability standard.
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I have installed a 3m run of 125mm round ducting for a cooker hood. This has been terminated with a cowl and damper, but the wind runs across the damper making it open quite often, letting in draughts and street noise.
Can this connector/ damper be used and will it work in the vertical position close to the extract unit where it can be accessed for cleaning purposes?
Thank you for your question. Yes this damper can be fitted in an vertical position.
Can this damper be reversed and used to prevent ingress of air until an adjacent kitchen extractor is turned on and then allowing air supply?
Hi, I bought this to fit vertically in pipework above my kitchen extractor fan. The purpose to blow open when the fan is on and then as I've read the flap then falls closed by gravity once the fan stops to stop any back smells coming through if you are connected to another system which I am. This vertical pipe runs into a horizontal tee piece. One end going to the outside and the other is an extractor in another room. My concern is that the flap doesn't seen to close with gravity. Even if I hold it in my hand and push the flap up it wont fall back into place. My worry is its not going to do the job I bought it for. Let me know what you think please
For 4" (100mm) extractor fans or for low power cooker hoods up to 250m³/hour
For medium extraction rates or if available depth is limited up to 500m³/hour
For 6" (150mm) extractor fans or for high power cooker hoods up to 500m³/hour & above
For a shallow space, such as ceiling voids or under floor, where high extraction rates are not needed:
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