1/2 in EMT Three-Way Canopy Corner
A three-way corner connector for 1/2 in EMT conduit (17.9 mm OD). It has 18.4 mm sockets, 35 mm deep, on the +X, +Y and +Z axes, and each socket locks with an M4 thumbscrew in a brass heat-set insert. Use it to build shade canopies, bird-netting cages, cold frames and greenhouse frames from cheap hardware-store conduit. The horizontal bores have teardrop tops so it prints flat without supports, and the whole part is 69 x 61 x 65 mm.
outdoor emt-conduit canopy-frame corner-connector