Type-W Vent Extender Duct

SURECAV LIMITED

£49

The extension ducts are used with the Type W vents. The Extenders are required with an outer leaf over 100mm deep. Size: 200/225 x 65 x 10mm Type W Extension Duct Translucent. 50 ducts to a box. Extension duct for connection to rear of Type-W Vent to provide lengthened version to service masonry skins of increased thickness. Can be cut on site if required. DIMENSIONS: 200/225 x 65 x 10mm AIR FLOW RATING: 300mm² MATERIAL: Polypropylene BOXED: Packs contain 50 extensions

SURECAV LIMITED's own words, read from their page.

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Where this comes from

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 SURECAV LIMITED, number 04653612. 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.