This is a bumper case for the Essential PH1. This case has been designed slightly shorter than the actual phone, to provide tension after installation to keep the bumper on the phone. I've successfully printed on a Lulzbot Taz 5, using a .3mm nozzle, at 215C with a 100C build plate, using GizmoDorks Red TPU. I'd recommend printing a skirt to prevent the print from lifting off the build plate during printing. Models ending in _360 are 360 Camera Compatible.
Version 9 is a slim case with more exposed front glass, and more exposed back ceramic, as the lip that goes over the front/back is smaller. This is also the largest version of the bumper, if you're using a less elastic flexible TPU.
Version 10 Large is the same bumper thickness, except there is a little more lip over the front glass/back ceramic to keep the case on the phone a little better, and it's both shorter and narrower to provide even more tension when installed to keep it on the phone.
Version 10 Small is identical to Version 10 Large, except it's .1" shorter on the long edge to make it even tighter. This is as small as I'd want to make with the GizmoDorks TPU, which is supposedly similar to name brand TPU with an 85A hardness. Harder, less elastic TPU material will likely want to use Version 10 Large instead.
Version 12 is designed explicitly to combat the case coming off in your pocket, although this is likely overkill as the V9 never seemed to have significant issues with this. You will NEED supports enabled for this model, using Simplify3d allows you to tweak the size and location of supports to do the bare minimum. I believe I used a 3.3-3.5mm pillar resolution on the automatic supports, and removed any odd corner supports that were generated.