The internal corner trim is the one that gets forgotten. Walk the elevation and count the corners that turn inward — an L-shaped house, a rear extension, a recessed porch — and each one needs this rather than the external corner.
 
450mm covers a double board, so it suits deep overhangs as well as standard runs. Slides over the board ends and hides the cut.
 
A note on lead time. Irish Oak is a special foil rather than a stock colour, so most branches bring it in rather than holding it on the shelf. Allow 3–10 working days. Order the whole elevation together and it all lands at once — it is piecemeal ordering that causes the wait.
 
Key Features
✔ 90° internal corner for inward turns
✔ 450mm — covers a double board
✔ Hides cut board ends
✔ Colour-matched Eurocell Irish Oak woodgrain foil
✔ Count the internals before you order — they are the ones people miss