DIY Plastic Drawer Profile

[Dave The Lad]

I need to make some narrow lightweight drawers for my caravan and am looking for the plastic profile that I've seen in the past (and we've had in previous kitchens) - used to be able to get the profile to cut to length and then join with corner pieces. Search of the DIY stores and the web has resulted in nothing. Anyone aware of if/where these are still available?