Fire Damper Duct Sleeve (2 Hour Rated) – 204x60mm

Alpha Air Ventilation Supplies

£47.91

2-hour rated intumescent sleeve for flat channel plastic duct passing through fire-rated walls and floors. Intumescent fire damper duct sleeve for flat channel plastic ducting, fire rated to 2 hours. Fitted where flat duct passes through a fire-rated wall or floor, the intumescent liner expands under heat to crush the duct and seal the opening, preventing the passage of fire and smoke. A simple, compliant way to maintain compartmentation on domestic and light-commercial ventilation runs without a mechanical damper.

Alpha Air Ventilation Supplies's own words, read from their page.

Buy from ALPHA AIR VENTILATION SUPPLIES LIMITEDALPHA AIR VENTILATION SUPPLIES LIMITED is a UK retailer, not the maker. Price seen 2026-09-26. Not an affiliate link, we earn nothing from it.

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The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as ALPHA AIR VENTILATION SUPPLIES LIMITED, number 08447300. Checked 2026-08-29.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Not yet checked.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
Not established. Many companies file a statement rather than naming a controlling shareholder.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.

Fire Damper Duct Sleeve (2 Hour Rated) – 204x60mm

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