High-flow outdoor drain covers for 4" pipe

These are two models for 4 inch pipe (which is actually a 4.15" (105.5mm) opening,) to temporarily use during storms. The normal flat plastic covers don't have much open area and can clog up with just a few leaves, these use vanes raised above ground level to keep most of the leaves away, then a relatively deep filter basket to catch anything that makes it through, and they work pretty well for me. I made a version with spiral vanes because the way runoff flows to one of my drains makes it swirl around, I doubt it offers any actual better performance, but it looks cool.

Note that these aren't anywhere near strong enough to survive being stepped on - someone might get slightly hurt when their foot falls down the drain pipe, so they're not appropriate for constant use where people walk. I swap back to the normal flat covers from the store when it's dry.

These are designed for a 0.6mm nozzle, but should work alright with 0.4mm, they should be printed top-down, and do not require supports if your printer/filament can do ~18mm bridges, and if you keep them inside when it's hot out, PLA should be alright.

Some of the photos show the versions I made last year, I never posted those, but these are an improvement in every way.