Timloc Aero Core Through-Wall Ventilation Set Cowl and Baffle – Terracotta – 127 x 350 (1pcs)

The Timloc Aero Core through-wall ventilation set pairs a terracotta cowl with a matching baffle to deliver controlled background ventilation through a cavity wall. If you need a clean, finished vent that handles both general background airflow and the ventilation demands of heat-producing appliances, this is the setup that does it in one go. The terracotta colour blends naturally with most brick and tile finishes, so it doesn’t stick out like a sore thumb once fitted.

Through-wall ventilation is one of those things that often gets bodged on site. A sleeve gets slapped through the wall, a basic grille gets stuck on the outside, and everyone hopes for the best. The Timloc Aero Core system is properly thought through. The external cowl is designed to keep wind-driven rain and debris out, while the internal baffle manages airflow and prevents cold draughts from pushing straight through into the room. That matters more than people realise, especially in exposed locations.

Where the Timloc Aero Core Terracotta Through-Wall Vent Gets Used

This set suits new-build and retrofit applications where a permanent, reliable ventilation path is needed through a solid or cavity wall. Builders use it when installing background ventilators alongside gas appliances, solid fuel stoves, or any heat source that requires a dedicated air supply. It also works well in utility rooms, plant rooms, and anywhere ventilation building regulations need to be satisfied without the faff of a more complex system.

The terracotta finish makes it a natural choice for properties with red or buff brick, particularly on traditional housing stock where a grey or white plastic vent would look completely out of place. One component serves the outside face, the other the inside. Simple enough.

Cowl and Baffle Working Together

The cowl sits proud of the external wall and deflects rain while allowing air movement. The baffle on the internal face controls the rate of airflow and reduces the direct draught effect, which is particularly useful in habitable rooms. Together they form a complete timloc terracotta through wall vent cowl system that meets the requirements for both background and appliance ventilation without needing additional components. Two parts, one purpose, no guesswork on compatibility.

Available in several sizes to suit standard core drill diameters. Check the aperture dimensions before ordering — the size shown in the product attributes refers to the cowl face dimensions, not the core hole size.