Found them! https://www.amazon.com/dp/B07ZG1BMSX/ref=cm_sw_r_cp_apa_fabc_HD08FbFS6T1CQ?_encoding=UTF8&psc=1
You can buy painting triangles to place underneath the cabinet doors -- it makes painting the sides so much easier! Something like this: https://www.amazon.com/U-S-Art-Supply-Yellow-Cabinet/dp/B07ZG1BMSX/