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Air Terminals, Grilles & Louvres
We supply a wide variety of air terminals, egg crate grilles, air valves, 4-way ceiling diffusers, and external weather louvres — essential components for both the start and end of duct runs, or for passive ventilation through walls and ceilings.
Whether you’re working on a commercial, industrial or residential project, our products are suitable for a range of HVAC applications including supply, extract and return air systems. They’re commonly used to promote effective fresh air movement and help maintain good air quality throughout a building.
In addition to our standard product range available online, we also manufacture and supply bespoke grilles, diffusers, and louvres, including:
Non-vision grilles
Linear bar grilles
Spiral duct grilles
Swirl diffusers
Perforated plate grilles
Custom sizes, finishes, and specifications are available to suit your project requirements. For pricing or further information on custom-made items, please contact our team at orders@alphatube.co.uk.
Supply Air Valve Metal
Supply air valves in white metal come complete with a screw on spigot for connecting flexible ducting easily.
The central core is on a screw to balance flow rate.
Air valves are commonly used in whole house ventilation, toilet extract, kitchen extract etc.
£0.00
Extract Air Valve Metal
Extract air valves in white metal come complete with a screw on spigot for connecting flexible ducting easily.
The central core is on a screw to balance flow rate.
Air valves are commonly used in whole house ventilation, toilet extract, kitchen extract etc.
£0.00
Fusible Links
We offer a large range of replacement fusible links which can be used in different ways in dampers, doors and vents. All of the common fusible links are in stock and for sale on this page - please enquire for other types if you cannot find them on our website.
Found in systems like fire doors, fire dampers, and sprinkler systems.
It’s a metal link engineered to melt at a certain temperature (e.g., 165°F or 74°C), releasing a latch, closing a door, or activating a sprinkler.
Common fire damper makes these are used on are: BSB, HVC, NCA, Advanced Air & Action Air (Swegon) Chubb Fire, Flaktwoods, A1 Shutters, Lindab Fire Dampers, Wolseley UK, Ascot Doors, Kidde Thorne & Gilberts.
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