This is a two pieces support, combine them and you are done. The max supported frame size is: Height 22cm Width 17.5 cm Length 1.8 cm You may have to scale this from 100% to 1000% in your slicer before printing.
photo frame stand 3D Models to Print - yeggi
Picture Frame Stand by SpikeUK
Frame – Free download 3d model Files
Model available for download in Autodesk FBX format. Visit CGTrader and browse more than 1 million 3D models, including 3D print and real-time assets
Standing Picture Frame | 3D model
▷ picture frame easel stand 3d models 【 STLFinder 】
FOLDING PICTURE FRAME STAND REPLACEMENT by Andi @ LFG Design
picture frame stand 3D Models to Print - yeggi
Picture Frame Stand by SpikeUK
picture frame stand 3D Models to Print - yeggi