3D-printable model of the transepithelial hydrostatic pressure device used to apply uniform pressure across epithelial monolayers on Transwell inserts. This STL file contains both the base module and the pressure-cap assembly, complete with gasket channels for o-ring attachment to ensure a leak-free seal. Ideal for labs seeking to study pressure-mediated differentiation in gut or lung epithelial cultures, and the design is compatible with common FDM/SLA printers.