Downspout to square drain

thingiverse

I designed this conversion to transform a standard 3-inch downspout rectangle into a 4-inch square drain for my deck's drainage system. Originally, the downspout measured 108mm x 78mm and snugly fit inside the top opening of the new drain, while its bottom section measured 147mm x 147mm, easily replacing the old drain grate. Due to the placement of a nearby post, I had to offset the drain by 44mm for optimal positioning.