Connects a telescopic underfloor ventilator to a standard 110mm plastic underground drainage pipe via a coupling. Fits onto the lower rear opening of the Timloc telescopic underfloor vent.
The Timloc underfloor vent duct adaptor is a straightforward but important component in any underfloor ventilation setup. It fits onto the lower rear opening of a Timloc telescopic underfloor ventilator and allows you to connect directly to a standard 110mm external diameter plastic underground drainage pipe using a standard coupling. Without it, getting a proper sealed connection between your vent and any pipework run beneath the floor is a lot more awkward than it needs to be.
Underfloor ventilation is one of those jobs that gets underestimated on site. Get it wrong and you end up with damp, timber decay, and a callback you didn’t budget for. Using the correct adaptor makes the whole system work as intended, keeping the airflow path sealed and directing it where it needs to go rather than just venting into a void with no control. The duct adaptor bridges the gap between the vent body and whatever pipe run you’re feeding air through, whether that’s running under a suspended timber floor, through a beam and block sub-floor, or across a longer distance where a simple open brick vent won’t do the job.
Where the Timloc Duct Adaptor Fits Into the System
Timloc’s telescopic underfloor ventilators are designed to extend through the thickness of the wall cavity, adjusting to suit different wall constructions. The duct adaptor sits at the rear of that unit, on the internal side, where it provides a proper 110mm connection point. From there you can run standard drainage pipe underground or beneath the slab to draw fresh air into areas that can’t be reached from a direct wall vent alone. It’s a common solution on longer terrace rows, extensions with restricted external wall access, or anywhere the sub-floor space needs ventilation but a direct through-wall vent isn’t practical.
Available in a range of colours including White, Black, Brown, Buff, Grey, Terracotta, Blue and Black, and Clear. That said, being fitted to the rear of the vent unit, the adaptor itself isn’t usually visible once installed, so colour matching here is more about consistency with the rest of the vent assembly than aesthetics. Match it to your vent and you’re good.
Sold individually, which is useful when you’re making up a specific number of duct connections on a project, or replacing a single damaged adaptor without buying more than you need.
Pro Tip: When connecting the drainage pipe to the adaptor, use a standard 110mm push-fit coupling rather than trying to force a direct pipe connection; it keeps the joint removable if the vent ever needs to come out.
The Timloc underfloor vent duct adaptor is used wherever a telescopic underfloor ventilator needs to be connected to a run of 110mm plastic underground drainage pipe. This typically comes up on suspended timber floors, traditional brick-built properties, and extensions where the sub-floor void needs to be ventilated but a direct wall opening isn't available or practical. Builders, groundworkers, and general contractors all encounter this on domestic new builds and refurbishment projects.
Best For
Connecting telescopic underfloor ventilators to 110mm pipework
Suspended timber floor ventilation systems
Extensions with restricted external wall access
Longer duct runs beneath floors and slabs
Compatible With
Timloc telescopic underfloor ventilators
Standard 110mm external diameter plastic underground drainage pipe
Standard 110mm push-fit drainage couplings
Key Features
Fits lower rear opening of telescopic underfloor vent
110mm pipe connection
Available in multiple colours
Sold individually
Not suitable for: Not suitable for use with non-Timloc telescopic underfloor ventilators or pipes with a different external diameter than 110mm. Not intended as a standalone vent component.
Fit the duct adaptor onto the lower rear opening of the Timloc telescopic underfloor ventilator before or after the vent is installed in the wall, depending on access. The adaptor accepts a standard 110mm push-fit coupling, so connecting your pipe run is the same process as any standard drainage joint. Make sure the pipe is cut square and fully seated in the coupling for a proper connection.
Check the Timloc telescopic underfloor ventilator is correctly installed and set to the required depth for your wall thickness.
Locate the lower rear opening on the internal side of the vent unit.
Push the duct adaptor firmly onto the rear opening until it seats correctly.
Cut your 110mm drainage pipe square and deburr the end.
Connect the pipe to the adaptor using a standard 110mm push-fit coupling, ensuring the pipe is fully inserted.
Check the joint is secure and the run has adequate fall or support to prevent any sag over longer distances.
Which Timloc ventilator does this adaptor fit?
It is designed to fit the lower rear opening of the Timloc telescopic underfloor ventilator. If you are unsure whether it will suit your specific Timloc vent model, check the product code on your vent unit against Timloc's range to confirm compatibility.
Do I need a special coupling to connect the 110mm pipe, or will a standard one work?
A standard 110mm push-fit drainage coupling is all you need. Nothing proprietary required, which makes sourcing simple on site.
Does the colour of the adaptor matter since it's fitted at the rear of the vent?
In most installations the adaptor is not visible once the vent is in the wall and the pipework is connected. Colour is mainly relevant if you are matching it to a specific vent assembly for consistency. Functionally, all colours perform the same.
The adaptor is sized to accept a standard 110mm external diameter plastic underground drainage pipe, connecting via a push-fit coupling. It is designed specifically for the Timloc telescopic underfloor ventilator rear opening. Available in Black, Blue and Black, Brown, Buff, Clear, Grey, Terracotta, and White to suit different vent configurations.
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