1 year old wood sash window spares - plastic trim required

[midknight]

Thanks for checking this post

A year and a bit ago the builders fitted wood sash windows to a new row of terraces (we are not in a conservation area and there are few other wood sash windows in this area).

I am looking for some plastic trim that was fitted inside and outside of the windows. It covers part of the plastic covered spring that is fitted and also prevents the lower window being raised too far and the top window being lowered too far (there are 4 per sash window).

The plastic trim measures 170mm x 40mm and has 4 upstands to it so that if laid flat it has 3 channels along its length. The upstands on the sides are about 7mm deep and the 2 upstands in the middle about 13mm deep - all 170mm long.

I am wondering if anyone knows where I can get more of these plastic trims from - preferably in a longer length so I can cut them myself. Thank you for any assistance.

- retired plumber