Timloc – Louvre Vent with Flyscreen – Plastic- White (1 pcs)

A louvre vent with flyscreen does two jobs at once: it lets air circulate freely through a wall or timber frame while the mesh barrier keeps insects, debris and the odd determined spider out of the equation. Timloc’s white plastic louvre vent is a straightforward, well-made product used daily on housing developments, renovation jobs and self-builds across the UK. It fits internally, sits neatly flush against the surface, and the white finish works with most standard interior finishes without needing a coat of paint.

These vents come in four sizes, from the compact 166 x 85mm up to the larger 260 x 235mm, so there’s something appropriate whether you’re ventilating a small sub-floor void or a more substantial cavity. Sizing matters more than people sometimes assume — too small and the airflow rate won’t meet the requirement, too large and you’re cutting unnecessary holes in walls. Pick the size that matches your build specification or the existing vent aperture if you’re replacing.

Where Timloc Louvre Vents with Flyscreen Get Used

In practice these turn up in timber frame construction, suspended timber floors, roof spaces, under-stair voids, and general internal wall ventilation where a controlled airflow is needed without the draughts that an open vent would create. The louvre design deflects moving air downward rather than allowing a straight through-draft, which makes a noticeable difference in comfort when the vent is fitted in a habitable space. The flyscreen mesh is fixed into the body of the vent, so there’s nothing separate to lose or fit afterwards.

A Note on Gas Appliance Use

It’s worth being clear on this: these vents are not suitable for gas appliance ventilation. If you’re providing combustion air or flue-related ventilation for a boiler, fire or any gas-burning appliance, you’ll need a purpose-made unobstructed vent. Using a flyscreened louvre in that situation will restrict airflow below the required minimum, which is a building regulation issue as well as a safety one. For everything else — general background ventilation, sub-floor, roof voids, internal wall openings — they’re a solid, practical choice.

At this price point, buying a handful to keep on the van makes sense. They’re light, they don’t take up space, and the alternative is a return trip to the merchant because you’re one vent short on a Friday afternoon.