Window edging

[UnworthyBean]

Couldn't find a better place to put this, So here goes.

What is the proper name for this stuff? I've tried searching but can't find it. I would ask for links to buy some but as I understand OcUK are a bit strict about that sort of thing.

Im going to be replacing the Side panel with a full window (Without the triangle) I tried just replacing the mesh and fan mount with a full sheet of plexi, It looks brilliant but i reckon it would look better just being a full window.

 

[UnworthyBean]

The stuff that goes around the window, Just to give it more of a professional look. I've often heard it referred to as rubber grommet edging and U channel, But can't really find much.

Blowhole trim seems to bring more results though, Still need to find a UK supplier.

Edit: Found a site that supplies it, Only 50p a metre aswell, And I have the perspex for £4.10. Not bad for a brand new window. Anyone want my old one haha?