Temporary fixing of plastic pipe

OK, today I learn that what I used myself was "trunking" (rectangular, detachable lid, you can cut a succession of slots in the uprights of the U shaped part to make it take up a concave curve) and what I've seen elsewhere and used inside walls in houses is "conduit" (round edges, not openable) and I'm sorry I never looked that up before. I usually just grab the stuff off the shelf without looking at the label. Both are available in 50mm width at least.
 
Top