Universal Customizable Gutter Downspout Adapter

A univeral customizable adapter for connecting a gutter downspout to a round pipe (such as 4" PVC), or optionally to another section of downspout at a configurable bend angle. SCAD file included for your customizing pleasure (using OpenSCAD or Customizer).

Gutter downspout and pipe dimensions are customizable, as well as the forward and downward bend angles. Some example STL output files attached. Note that 4" PVC comes in different outside diameters (~4.5" for Schedule 40, or ~4.215" for thinner SDR35 & D2729). Output end can be configured to fit either inside or outside of the pipe. Check dimensions before printing!

Printing will require supports (and/or rotation to a better printing angle) in most configurations.

Pipe is assumed to be glued in place. Gutter downspout is assumed to be attached using screws. (Screw holes are optionally printed on either or both ends.)

Updated 11/15/2025: The V2 SCAD file allows stacking multiple downspout adapters together for complex downs