iPad 7/8/9th Gen. Portrait Holder [Multifunction Arm Mount]

The original files almost worked for my purposes, but left a bit too much of a side-to-side gap. I overhauled the design to fit a 7/8/9th gen iPad in portrait orientation (with a small amount of wiggle room for a low-profile case). Not intended to fit tightly, but rather to add a relatively form-fitted structure so the holder can take a bump without the iPad flying off its stand. Thanks to DaHouzCat for the original file as well as his other helpful add-on parts for the multifunction arm ecosystem.