I have a drainage gully on my driveway (galvanised steel grating, half
round concrete channel) which drains into a 4" plastic drain pipe
leading to a soakaway. A fair number of leaves and some sand from block
paving get into the gully and I would like to prevent as much of this as
possible going into the soakaway.
I can't find any suitable filter or grating for 4" pipe - does anyone
know if such a thing exists, and if so, where to get one?
I know I could get some fine mesh and put it over the hole, but I'd
rather get something which fits tightly into the hole if possible.